> Also, we can now say that Sentry is a proprietary software The article explains that Sentry was licensed under a non-OSI license (the BUSL) for the last 4+ y

> Also, we can now say that Sentry is a proprietary software The article explains that Sentry was licensed under a non-OSI license (the BUSL) for the last 4+ years. That license had more onerous terms than what it uses today. So if you believe this news means it has become proprietary today, you're ~4 years behind. > when you are standing on the shoulders of free software components like Python or somehow python frameworks like Django. Sentry wouldn't even exist without free-riding. Sentry has donated tens of thousands of dollars - probably over $100k over the years - to the PSF and Django. It is currently an acknowledged active sponsor of both [1,2]. This year alone Sentry gave $500,000 to open source foundations and maintainers [3]. Sentry itself was built as a Django ecosystem project, and anyone can use it according to the license terms (e.g. stand up a server and collect errors for their non-competing projects). And many organizations do that today. Sentry (the company) additionally contributes many permissive OSS projects, like popular utility libraries and key parts of the Sentry project itself (e.g. getsentry/responses or the SDKs). The issue is when competing entities take the source, produce purely commercial offerings with no upstream contributions / the source they produce is 100% closed. That’s free-riding. [1] https://www.python.org/psf/sponsors/ https://www.python.org/psf/sponsors/ [2] https://www.djangoproject.com/foundation/corporate-members/ https://www.djangoproject.com/foundation/corporate-members/ [3] https://blog.sentry.io/we-just-gave-500-000-dollars-to-open-source-maintainers/ https://blog.sentry.io/we-just-gave-500-000-dollars-to-open-...