Solid is a software tool that can be used to check, clean up, and convert standard format lexicon data.
If you or someone you know has a Standard Format Lexicon, you can use Solid to find structural issues with the data. Use Solid when preparing your data for publication, or when you want to start using other tools to maintain your lexicon, such as WeSay or FieldWorks Language Explorer. Even if (or especially if) you continue to work in SFM, it is a good idea to periodically run Solid to check the data; this can nip inconsistencies in the bud.
See the Download page for release notes, and the issue tracker for priorities and known issues. Solid has a small audience and does not get a lot of testing/feedback. If you come across issues, use Help | About, or create a new issue here in the bug tracker (you may need to register first).