When comparing Adobe Story vs Trelby, the Slant community recommends Adobe Story for most people. In the question“What is the best screenwriting software?” Adobe Story is ranked 4th while Trelby is ranked 5th.
Ranked in these QuestionsQuestion Ranking
Pro Great collaboration features
Pro Supports AV multi-col templates
Pro Interface is available in multiple languages
Pro Available on Windows, Web and iOS with cross-syncing
Pro Includes scheduling tools
Pro Free, open source and cross-platform
Trelby is available absolutely free for Windows and Linux with source code available on GitHub.
Pro Final Draft compatible
Can import and export .fdx files.
Pro Has a character name database
A character name database with 200k+ names from various countries is built into Trelby.
Pro Can highlight differences between different versions of a script
Con Will be gone soon
Adobe is ending support for Story and will be dropping the software completely on January 22, 2019. If you have scripts on there now, get them off before they're gone forever.
Con Lacks support for dual dialogue
There's no built-in way of handling two characters speaking at the same time.
Con Does not support custom elements
For example, lyrics.
Con No longer maintained
Right now in 2018, most recent updates are from three or more years ago. This creates problems installing the .deb releases on certain linux distros, and means it probably wont be getting long term support anymore.
Con Can't use bold, italic, underline
Con English only
Trelby supports the ISO-8859-1 character set, any characters that are outside of that set are not supported.
Con No online collaboration capabilities
Con Lacks revision tracking
Con No OSX version
Trelby is only available on Windows and Linux.