Developer tools live or die by friction. The ones worth keeping fade into the editor and the pipeline rather than demanding attention. These four do exactly that.
In the editor
Forge IDE reviews diffs against your team's conventions and generates tests before you open a pull request, with an optional self-hosted model. Snippetly keeps a searchable, auto-documented library of the snippets you reach for.
Around the edges
Regexer handles the regular expressions nobody wants to write by hand. Shipmate reads merged pull requests and writes human-readable release notes on every deploy, posting them to Slack and your docs.
None of these ask you to change how you work. They just remove a recurring tax.