Source code explorer Sourcetrail is now free and open source software
Sourcetrail, the previously commercial cross-platform source code explorer, is now available as free and open source software.
In the post announcing this open source availability, Sourcetrail developer Eberhard Gräther cites multiple reasons for the shift to free and open source availability, including an abundance of free developer tools and a lack of recognition of Sourcetrail's advantages that the commercial paywall made too much of an investment to overcome. For a small company with no marketing arm or free budget to allocate for anything outside of continued development and support, this is not a problem that can be solved within the commercial model that Sourcetrail previously utilized.
Despite the change to a free and open source release model, the development team still plans to continue its quarterly release cycle and will continue to provide full support for those that purchased “Sourcetrail - Commercial User License” entitlements.
For those that wish to continue to support the development of Sourcetrail, the development team has put up a Patreon page that allows you to financially support the source explorer's continued development with monthly pledges of $5, $10, and $25.
Sourcetrail Developer Blog