
Trelby - Detailed Review
Writing Tools

Trelby - Product Overview
Trelby Overview
Trelby is a free, open-source screenwriting software that is designed to make the process of writing and formatting screenplays as seamless and efficient as possible.Primary Function
Trelby’s primary function is to help screenwriters properly format their screenplays as they write. It automates the formatting process using keyboard shortcuts and automated text recognition, ensuring that the script adheres to industry standards.Target Audience
The target audience for Trelby includes screenwriters, filmmakers, and anyone involved in the pre-production phase of film and television projects. It is particularly appealing to those who need a reliable and cost-effective solution for screenwriting.Key Features
Automated Formatting
Trelby automatically formats screenplay elements such as scene headings, character names, and dialogue, making the writing process faster and more streamlined.Reporting Tools
The software can generate various reports, including scene, location, character, and dialogue reports, which are invaluable for coordinating resources and talent during pre-production.Multiplatform Support
Trelby is available on both Windows and Linux, providing a consistent experience across different operating systems.Multiple View Modes
It offers several view modes, including draft view, layout view, side-by-side, and full-screen mode, allowing writers to choose the view that best suits their writing style.Comparison and Version Control
Trelby features a comparison view that shows changes between different drafts, making it easy to track revisions and revert to earlier versions if needed.Export Options
The software supports a variety of export formats, including PDF, formatted text, HTML, RTF, Final Draft XML (.fdx), and Fountain (.fountain), facilitating collaboration with different software tools.PDF Generation
Trelby includes a highly configurable PDF generator that allows for custom fonts and watermarks, which is useful for tracking shared files.Script Error Detection
It can identify and highlight certain errors in the script, such as empty lines or improperly formatted elements, to help maintain script integrity.Conclusion
Overall, Trelby is a versatile and practical tool for screenwriters and filmmakers, offering a range of features that enhance the writing and pre-production process without the cost associated with many other screenwriting software options.
Trelby - User Interface and Experience
Trelby Overview
Trelby, a free and open-source screenwriting software, offers a user-friendly interface that is designed to streamline the writing process for screenwriters.
User Interface
The main window of Trelby is organized in a clear and simple manner. Here, you will find:
- Tabs: Each script has its own tab, labeled with the filename, allowing easy switching between different scripts. You can close a script by clicking the ‘X’ at the end of its tab.
- Element Style Column: This column displays the current element’s style, helping you keep track of whether you are writing a scene, character, dialogue, or other elements.
- Key Function Column: This shows what the Enter and Tab keys will do in the current context, which is helpful for maintaining the correct formatting.
- Page Number Column: It displays the current and total page numbers, keeping you informed about the length of your script.
Ease of Use
Trelby is praised for its simplicity and ease of use. Here are some key features that contribute to this:
- Simple and Non-Distracting: The user interface is minimalistic, with a small number of icons on the side, which helps maintain focus on the writing process.
- Multiple View Options: You can switch between draft, layout, or side-by-side modes, depending on your needs.
- Typing Intelligence: Trelby includes features like automatic scene element changes when typing “ext.” or “int.”, automatic capitalization of the first letter of sentences, and automatic conversion of parentheses to parenthetical elements.
- Keyboard and Mouse Selection: The selection mechanism is optimized for keyboard use, allowing precise selection and editing across multiple scenes and pages.
Overall User Experience
The overall user experience with Trelby is positive, particularly for those new to screenwriting:
- User-Friendly Tools: Trelby provides an extensive set of tools that are easy to use, such as script comparison tools, PDF watermark generators, and error detection features. These tools save time and enhance the writing process.
- Community-Driven: Being open-source, Trelby benefits from community contributions, which ensures transparency and trustworthiness. The absence of hidden fees or intrusive ads adds to its credibility.
- Error Detection: Trelby can identify and highlight certain errors in your script, such as empty lines or misplaced elements, which helps in maintaining proper formatting.
- Customization: The software allows control over various aspects of script formatting, including page size, margins, indentation, and font styles. These settings can be saved and reused across different scripts.
Conclusion
In summary, Trelby’s user interface is straightforward, easy to use, and well-suited for screenwriters who need a reliable and free tool to manage their scripts efficiently.

Trelby - Key Features and Functionality
Trelby Overview
Trelby is a free, open-source, and multiplatform screenwriting program that offers a range of features to streamline the scriptwriting process. Here are the main features and how they work:Screenplay Editor
Trelby includes a comprehensive screenplay editor that enforces correct script format and pagination. This means that as you write, the software automatically formats your script according to industry standards, saving you time and ensuring your work looks professional.Auto-Completion and Spell Checking
The editor features auto-completion and a built-in spell checker. Auto-completion helps by suggesting common screenplay elements as you type, while the spell checker ensures your script is free of typos and grammatical errors.Multiple Views
Trelby offers multiple views to suit different writing preferences. You can switch between draft view, WYSIWYG mode, and full-screen mode. This flexibility allows you to choose the view that best fits your writing style.Character Name Database
The software includes a vast character name database with over 200,000 names from various countries. This database helps you quickly and easily find names for your characters, adding a touch of realism to your script.Reporting Features
Trelby can generate useful filmmaking reports, such as scene, location, character, and dialogue reports. These reports are invaluable during pre-production, helping you coordinate resources and talent more efficiently.Script Comparison
The software allows you to compare different versions of your script, showing what changes were made between drafts. This feature is particularly useful for tracking the evolution of your script and reverting to earlier versions if needed.Import and Export Options
Trelby supports a variety of file formats for import and export, including PDF, formatted text, HTML, RTF, Final Draft XML (.fdx), Celtx (.celtx), Fountain (.fountain), and Fade In Pro (.fadein). This flexibility makes it easy to work with other screenwriting tools and share your scripts with others.PDF Generator
The built-in PDF generator is highly configurable, allowing you to embed your chosen font and create PDFs with custom watermarks. This helps in tracking shared files and maintaining the professional appearance of your scripts.Multiplatform Support
Trelby is available on multiple platforms, including Windows and Linux, ensuring that the software behaves identically on all platforms and generates the exact same output.AI Integration
There is no indication that Trelby integrates AI technology into its features. The software relies on its predefined rules and formatting guidelines to automate the screenplay formatting process, rather than using artificial intelligence.Conclusion
In summary, Trelby is a powerful and free screenwriting tool that streamlines the writing process with its automatic formatting, reporting features, and flexible viewing options, all without the need for AI integration.
Trelby - Performance and Accuracy
Trelby Overview
Trelby is a free, multiplatform screenwriting program that offers several key features to support screenwriters, but it also has some limitations and areas for improvement.Performance
Trelby performs well in several areas:Formatting and Automation
It enforces correct script format and pagination, automating many of the formatting tasks that would be tedious in a general word processor. This helps writers focus on the story rather than the formatting.Multiplatform Compatibility
Trelby behaves identically on all platforms, ensuring that the output is consistent regardless of the operating system you use.Reporting and Organization
The program can generate scene, location, character, and dialogue reports, which are invaluable for pre-production planning and coordination.Customization and Views
It offers multiple views, including draft view, WYSIWYG mode, and fullscreen, allowing writers to choose the view that best suits their writing style.Accuracy
In terms of accuracy, Trelby generally does a good job:Script Formatting
It ensures that the screenplay is formatted correctly according to industry standards, which is crucial for professional presentation.Error Checking
Trelby includes an error checker to clean up leftover formatting mistakes, helping maintain accuracy in the script.Limitations and Areas for Improvement
Despite its strengths, Trelby has a few notable limitations:Advanced Features
Trelby lacks some advanced features available in paid screenwriting software, such as the ability to indicate simultaneous dialogue between characters. Users have to work around this by using action lines.Spell Checker
The spell checker in Trelby is not perfect. It does not check for context-related errors and may miss some mistakes. Users often need to run their scripts through another program with a better spell checker to ensure accuracy.Feature Set
While Trelby covers the core features needed for screenwriting, it does not offer all the bells and whistles found in more expensive alternatives. This might limit its appeal for users who need more advanced functionalities.Engagement and User Experience
Trelby is generally user-friendly and easy to use:Simple and Fast
The program is described as simple, fast, and elegantly laid out, making it easy for writers to get started quickly.Configurability
Trelby is infinitely configurable, allowing users to customize it to their preferences.Community and Support
Being free and open-source, Trelby welcomes contributions from developers and screenwriters, which can enhance its features and user experience over time.Conclusion
In summary, Trelby is a solid choice for screenwriters looking for a free, reliable, and easy-to-use tool that handles the basics of screenwriting well. However, it may not meet the needs of those requiring more advanced features or a more sophisticated spell checker.
Trelby - Pricing and Plans
Pricing and Availability
Trelby, a free and open-source screenwriting program, does not have a tiered pricing structure or different plans. Here are the key points regarding its pricing and availability:Free Software
Trelby is completely free to download and use. There are no costs associated with using the software, and all features are available at no charge.No Premium or Paid Plans
Unlike some other software, Trelby does not offer premium or paid plans. All users have access to the full range of features without any additional costs.Features Included
The software includes a wide range of features such as automatic formatting and pagination, auto-completion, spell checking, multiple views (draft view, WYSIWYG mode, fullscreen), a character name database, scene/location/character/dialogue reports, script comparison, and a highly configurable PDF generator.Open-Source
Being open-source, Trelby allows users to contribute to the software by editing its code, which means users can add new features or modify existing ones if they have the technical expertise.Conclusion
In summary, Trelby is a free, feature-rich screenwriting program with no additional costs or tiered plans, making it an excellent option for anyone looking for a comprehensive and cost-effective screenwriting tool.
Trelby - Integration and Compatibility
Trelby Overview
Trelby, a free and open-source screenwriting software, offers impressive integration and compatibility features that make it a versatile tool for screenwriters and filmmakers.
Platform Compatibility
Trelby is available for Windows and Linux, ensuring a consistent user experience across these two operating systems. However, it is not compatible with Mac OS, which might be a limitation for some users.
File Format Compatibility
One of Trelby’s strongest points is its ability to import and export a wide range of file formats. You can import files from popular screenwriting software such as Final Draft XML (.fdx), Celtx (.celtx), Adobe Story (.astx), Fountain (.fountain), and Fade In Pro (.fadein). Additionally, it supports plain text, HTML, RTF, and PDF formats. This cross-compatibility makes it easy to collaborate with other writers and filmmakers who use different software.
Export Options
Trelby allows you to export your scripts in various formats, including PDF, formatted text, HTML, RTF, Final Draft XML (.fdx), and Fountain (.fountain). The built-in PDF generator is highly configurable, enabling you to embed custom fonts and add watermarks to your PDFs, which is particularly useful for tracking shared files.
Script Comparison
Trelby features a script comparison tool that allows you to compare different versions of your script. This tool generates a PDF showing the changes between two scripts, highlighted in red for deleted lines, green for added lines, and yellow for single-line changes. This feature is invaluable for tracking changes and revisions.
Reporting and Analysis
Trelby can generate various reports, such as scene/location/character/dialogue reports, which are helpful during pre-production. These reports help you plan your shoot by providing detailed information about the script elements.
Customization and Settings
The software is highly configurable, allowing you to change keyboard shortcuts, interface colors, and other settings to suit your writing style. Trelby also supports multiple view modes, including draft view, WYSIWYG mode, fullscreen, and side-by-side views, making it flexible for different writing preferences.
Integration with Other Tools
While Trelby does not have direct integration with other writing tools or project management software, its compatibility with various file formats ensures that you can easily share and work on scripts with collaborators using different software. This makes it a practical choice for collaborative projects.
Conclusion
In summary, Trelby’s integration and compatibility features make it a valuable tool for screenwriters, offering flexibility, cross-platform support, and extensive file format compatibility, all while being completely free and open-source.

Trelby - Customer Support and Resources
Customer Support and Additional Resources for Trelby
Community and Contributions
Trelby is an open-source software, which means that users can contribute to its development. This open-source nature encourages a community-driven approach where users can help improve the software by contributing code, reporting bugs, and suggesting new features. You can get involved and contribute through the Trelby website.Documentation and Manual
Trelby provides a comprehensive manual that covers all aspects of using the software. This manual includes detailed instructions on basic usage, settings, and advanced features. It is a valuable resource for both new and experienced users looking to get the most out of the program.Getting Started Guide
The Trelby website offers a “Getting Started” guide that walks users through the initial steps of using the software. This guide covers topics such as typing intelligence, selection methods, script errors, and control over page and element settings. It helps new users to quickly familiarize themselves with the program’s features.Feature-Specific Resources
Trelby’s website provides detailed information on its various features, including script formatting, auto-completion, spell checking, and PDF generation. These resources help users understand how to use each feature effectively and customize the software to their needs.Social Media and Community Engagement
Trelby has a presence on social media platforms, such as Twitter (@TrelbyOrg), where users can connect with the community, ask questions, and stay updated on the latest developments and updates.Conclusion
While Trelby does not offer traditional customer support options like live chat or phone support, its open-source nature, comprehensive documentation, and community engagement provide a strong foundation for users to find help and resources when needed.
Trelby - Pros and Cons
Advantages of Trelby
Trelby, a free and open-source screenwriting software, offers several significant advantages for writers:Automation and Formatting
Trelby automates screenplay formatting, ensuring your script adheres to industry standards. It uses keyboard shortcuts and automated text recognition to streamline the writing process, making it easier to focus on the content rather than the format.Multiplatform Support
Trelby is available on multiple platforms, including Windows and Linux, providing a consistent experience across different operating systems. This flexibility allows writers to work seamlessly regardless of their preferred OS.Multiple Views
The software offers various view modes such as draft view, WYSIWYG mode, side-by-side, and full-screen mode. This variety caters to different writing preferences and enhances the writing experience.Reporting and Analysis
Trelby generates useful filmmaking reports based on elements like scenes, characters, and locations. These reports help in planning and organizing the shoot. Additionally, it features a comparison view to track changes between different drafts.Character Name Database
Trelby includes a vast character name database with over 200,000 names from various countries, making it easier to find and use diverse character names.PDF Generation
The software has a highly customizable PDF generator that allows users to embed fonts and create PDFs with personalized watermarks, which is helpful for tracking shared files.Typing Intelligence
Trelby features typing intelligence that automatically adjusts elements like scene headings, character names, and dialogue, making the writing process more efficient.Error Detection
Trelby can detect certain errors in your scripts, such as empty lines, misplaced parenthetical elements, and incorrect dialogue sequences, helping to maintain script integrity.Disadvantages of Trelby
While Trelby is a powerful tool, there are some limitations and potential drawbacks:Learning Curve
Although Trelby is intuitive, it may still require some time to get familiar with its features and shortcuts, especially for those new to screenwriting software.Limited Advanced Features
Compared to some commercial screenwriting software, Trelby might lack some advanced features or the polish of more expensive alternatives. However, it covers all the core needs of screenwriters effectively.No AI-Driven Writing Assistance
Unlike some modern writing tools, Trelby does not include AI-driven writing assistance such as content generation, automated research, or advanced language analysis. It relies on the writer’s creativity and input.Community Support
While Trelby is open-source and welcomes contributions, it may not have the same level of commercial support or a large community of users as some other software. However, this also means it is free and open to community development. In summary, Trelby is an excellent choice for screenwriters looking for a free, feature-rich, and highly configurable tool that automates many aspects of screenplay writing. However, it may not offer the advanced AI-driven features found in some other writing tools.
Trelby - Comparison with Competitors
When Comparing Trelby with Other Writing Tools
When comparing Trelby, a free and multiplatform screenwriting program, with other writing tools, especially those in the screenwriting and AI-driven categories, here are some key points to consider:
Unique Features of Trelby
- Free and Open Source: Trelby is completely free and open-source, making it accessible to anyone without any cost.
- Multiplatform Compatibility: It runs identically on Linux and Windows, ensuring consistent output across different platforms.
- Screenplay Formatting: Trelby enforces correct script format and pagination, which is crucial for screenwriters. It also includes features like auto-completion, spell checking, and a character name database with over 200,000 names.
- Customization: The program is infinitely configurable, allowing users to control every aspect, from keyboard shortcuts to interface colors.
- Reporting and Comparison: Trelby offers detailed reports on scenes, characters, and dialogue, and it can compare different revisions of a script.
Alternatives in the Screenwriting Category
- Arc Studio Pro: This is a paid alternative that offers industry-standard formatting, real-time collaboration, and automatic backups. It is suitable for both solo writers and teams.
- Scrivener: While primarily known for long-form writing projects, Scrivener can also be used for screenwriting. It offers a project outline, drafts integration, and is highly preferred by many writers.
- Dabble: This tool is more geared towards novel writers but can be adapted for screenwriting. It features cloud sync, plot organization, and character development tools.
AI-Driven Writing Tools
While Trelby is not an AI-driven tool, here are some AI writing tools that, although not specifically for screenwriting, offer versatile content creation capabilities:
- KoalaWriter: Uses GPT-4 and Google’s AI technologies to produce high-quality, SEO-optimized content. It is user-friendly and suitable for various types of content, but it is not free and has higher pricing tiers.
- Jasper: Known for its ability to create both short-form and long-form content, Jasper supports 25 languages and has customizable content rules. However, it is more expensive and may require additional editing for long-form content.
- Writesonic: This tool is fast and capable of generating quality content quickly. It offers intuitive tools for idea generation and AI-driven editing but has limited customization options and can be costly for high-volume content needs.
Key Differences
- Purpose: Trelby is specifically designed for screenwriting, adhering strictly to screenplay formatting guidelines. In contrast, AI-driven tools like KoalaWriter, Jasper, and Writesonic are more versatile and can generate various types of content.
- Cost: Trelby is free, while most AI-driven tools come with a subscription fee that can vary widely depending on the features and word count limits.
- Customization and Control: Trelby offers extensive customization options, which is unique compared to many AI-driven tools that may have more limited customization capabilities.
Conclusion
In summary, Trelby stands out as a free, highly configurable, and specialized tool for screenwriting, while AI-driven tools like KoalaWriter, Jasper, and Writesonic are more versatile but come with a cost and may not be as tailored to the specific needs of screenwriters.

Trelby - Frequently Asked Questions
Here are some frequently asked questions about Trelby, along with detailed responses to each:
What is Trelby and what does it do?
Trelby is a free, open-source screenwriting software that helps you properly format your screenplay as you write. It automates the screenplay formatting process using keyboard shortcuts and automated text recognition, making the writing process more efficient. Trelby also generates useful reports for filmmakers, such as location and character reports, and supports multiple view modes and platforms.
Is Trelby compatible with other screenwriting software?
Yes, Trelby is compatible with other screenwriting software. You can import files from programs like Final Draft, Celtx, and Fade In Pro, and export your work in various formats including Final Draft XML (.fdx), Celtx (.celtx), Fountain (.fountain), and more. This makes it easy to work with files from different software and share them with others.
What platforms does Trelby support?
Trelby supports Windows and Linux platforms. However, it is not compatible with macOS.
How does Trelby help with formatting my screenplay?
Trelby automates many aspects of screenplay formatting. For example, typing “int.” or “ext.” will automatically change the element to a Scene heading. It also corrects the case of “i” to “I” as you type and ensures the first letter of every sentence is uppercase. Additionally, it automatically changes elements based on your input, such as turning an empty Dialogue element into a Parenthetical when you type “(“.
What reporting features does Trelby offer?
Trelby can generate various reports that are useful for filmmakers. These include scene/location/character/dialogue reports, which help in planning and organizing your shoot. You can also compare different versions of your script to see what changes have been made.
How does Trelby handle multiple views and modes?
Trelby offers multiple view modes to suit your writing style. These include draft view, layout view, side-by-side view, and a full-screen mode for a more immersive writing experience. You can switch between these modes easily to find what works best for you.
Can I customize the appearance of my script in Trelby?
Yes, Trelby allows you to control various aspects of how your script looks. You can adjust page size, margins, indentation, and the width and appearance (bold, italic, etc.) of different element types. These settings can be found under Script/Settings.
How does Trelby handle script errors?
Trelby can find and highlight certain errors in your scripts, such as empty lines, parenthetical elements containing only ‘()’, or character elements not followed by a parenthetical or dialogue element. You can use the “Script/Find next error” option or press CTRL E to find these errors.
Can I export my script from Trelby in different formats?
Yes, Trelby supports exporting your script in various formats, including PDF, formatted text, HTML, RTF, Final Draft XML (.fdx), and Fountain (.fountain). The PDF generator is highly configurable and allows you to embed your chosen font and add custom watermarks.
How does Trelby’s comparison feature work?
Trelby’s comparison feature allows you to compare different versions of your script. This feature shows the changes made between drafts, helping you track how your script has evolved over time or revert to an earlier version if needed.
Is Trelby free and open-source?
Yes, Trelby is free and open-source software. It is licensed under the GPL, which means you can use it without any cost and also contribute to its development if you are a developer or screenwriter.

Trelby - Conclusion and Recommendation
Final Assessment of Trelby
Trelby is a highly versatile and feature-rich screenwriting software that is particularly well-suited for writers of all levels, especially beginners and those on a budget. Here are some key points that highlight its benefits and who would most benefit from using it:Key Features
Trelby boasts a range of features that make it an excellent choice for screenwriters. It includes an intuitive screenplay editor, auto-completion, script formatting, and spell checking. The software also supports various import and export formats such as Final Draft XML, Celtx, Fountain, and PDF, making it compatible with other industry-standard tools.User-Friendly Interface
Trelby is known for its simple, fast, and elegantly laid-out interface, which makes screenwriting straightforward and efficient. It offers multiple view modes, including draft view, WYSIWYG mode, and fullscreen, allowing writers to choose the view that best suits their writing style.Reporting and Organization
One of the standout features of Trelby is its ability to generate useful reports for filmmakers, such as scene, location, character, and dialogue reports. This functionality is invaluable during pre-production, helping to coordinate resources and talent effectively.Customization and Flexibility
Trelby is highly customizable, with features like a character name database containing over 200,000 names, version tracking, and the ability to compare scripts. It also supports keyboard shortcuts and has a built-in PDF generator with customizable watermarks.Multiplatform Support
Trelby is available on multiple platforms, including Windows, Linux, and Android, ensuring that writers can work seamlessly across different operating systems.Free and Open-Source
A significant advantage of Trelby is that it is completely free and open-source, licensed under the GPL. This encourages community involvement and contributions, making it a great option for educational institutions and start-up video editing companies.Who Would Benefit Most
- Beginning Screenwriters: Trelby is an excellent choice for new screenwriters due to its ease of use, automatic formatting, and comprehensive features.
- Educational Institutions: The free and open-source nature of Trelby makes it an ideal tool for teaching screenwriting classes.
- Start-up Video Editing Companies: For companies looking for a cost-effective way to manage scripts, Trelby offers all the necessary features without the financial burden.
- Independent Filmmakers: Trelby’s reporting features and ability to generate filmmaking reports make it a valuable tool for independent filmmakers in pre-production.