libgc releases available for downloading (distribution tarballs):

• gc4.4.tar.gz
• gc4.5.tar.gz
• gc4.6.tar.gz
• gc4.7.tar.gz
• gc4.8.tar.gz
• gc4.9.tar.gz
• gc4.10.tar.gz
• gc6.0.tar.gz
• gc6.1.tar.gz
• gc6.2.tar.gz
• gc6.3alpha1.tar.gz
• gc6.3alpha4.tar.gz
• gc6.3alpha5.tar.gz
• gc6.3.tar.gz
• gc6.4.tar.gz
• gc6.5.tar.gz
• gc6.6.tar.gz
• gc6.7.tar.gz
• gc6.8.tar.gz
• gc7.0alpha7.tar.gz
• gc-7.0alpha9.tar.gz
• gc-7.0.tar.gz
• gc-7.1alpha2.tar.gz
• gc-7.1alpha2-revised.tar.gz
• gc-7.1alpha3-080220.tar.gz
• gc-7.1alpha3-080224.tar.gz
• gc-7.1.tar.gz
• gc-7.2alpha2.tar.gz
• gc-7.2alpha4.tar.gz
• gc-7.2alpha5-20110107.tar.gz
• gc-7.2alpha6.tar.gz
• gc-7.2.tar.gz
• gc-7.2b.tar.gz
• gc-7.2c.tar.gz
• gc-7.2d.tar.gz
• gc-7.2e.tar.gz
• gc-7.2f.tar.gz
• gc-7.2g.tar.gz
• gc-7.2h.tar.gz - not recommended for the downstream package maintainers
• gc-7.2i.tar.gz - not recommended for the downstream package maintainers
• gc-7.2j.tar.gz
• gc-7.2k.tar.gz
• gc-7.2l.tar.gz
• gc-7.2m.tar.gz
• gc-7.2n.tar.gz
• gc-7.2o.tar.gz
• gc-7.2p.tar.gz
• gc-7.2q.tar.gz
• gc-7.2r.tar.gz
• gc-7.2s.tar.gz - latest legacy v7.2 release (rev. S)
• gc-7.3alpha2.tar.gz
• gc-7.4.0.tar.gz
• gc-7.4.2.tar.gz
• gc-7.4.4.tar.gz
• gc-7.4.6.tar.gz - not recommended for the downstream package maintainers
• gc-7.4.8.tar.gz - not recommended for the downstream package maintainers
• gc-7.4.10.tar.gz
• gc-7.4.12.tar.gz
• gc-7.4.14.tar.gz
• gc-7.4.16.tar.gz
• gc-7.4.18.tar.gz
• gc-7.4.20.tar.gz
• gc-7.4.22.tar.gz
• gc-7.4.24.tar.gz
• gc-7.4.26.tar.gz
• gc-7.4.28.tar.gz - latest legacy v7.4.x release
• gc-7.6.0.tar.gz
• gc-7.6.2.tar.gz - not recommended for the downstream package maintainers (because of version-info incompatible change)
• gc-7.6.4.tar.gz
• gc-7.6.6.tar.gz
• gc-7.6.8.tar.gz (MD5: 9ae6251493ead5d0d13b044954cec7d7)
• gc-7.6.10.tar.gz (MD5: 28bf15c7a5618715877a451f2721586c)
• gc-7.6.12.tar.gz (MD5: 8175e1be00c6cd6eac2e8d67bdf451df)
• gc-7.6.14.tar.gz (MD5: ac08ee4a73d69dac6ce1d725d20a2008)
• gc-7.6.16.tar.gz (MD5: 74fb76b6bccf0874cec65b794535a7dd)
• gc-7.6.18.tar.gz (MD5: 329dd8c58125719c51761b7888f3d69c)
• gc-7.6.20.tar.gz (MD5: 0fffca82c939a5fea6b324a3ecc8b0f9)
• gc-7.6.22.tar.gz (MD5: 6abe6ad592e1976d7a28e5661a8ea7c9) - latest legacy v7.6.x release
• gc-8.0.0.tar.gz (MD5: e1a614247b6d6a071f7677365fbf18a4)
• gc-8.0.2.tar.gz (MD5: 0c3e5a2de567a4f199dc07740bbf21d1)
• gc-8.0.4.tar.gz (MD5: 67a5093e2f9f381bd550aa891d00b54b)
• gc-8.0.6.tar.gz (MD5: 4878e629f482600f2060f30853c7b415)
• gc-8.0.8.tar.gz (MD5: bf60aa2263b71bea24cc2b5d83f059f1)
• gc-8.0.10.tar.gz (MD5: 0aa321694a559db4e9bb4b5cff75493a)
• gc-8.0.12.tar.gz (MD5: d9aad34402106ac31d9acdc7da139a37)
• gc-8.0.14.tar.gz (MD5: 22721960fc4a6ed7fa39bd6d4985ee40) - latest legacy v8.0.x release
• gc-8.2.0.tar.gz (MD5: c3c04af9c1e4209e315eee50efe7b320)
• gc-8.2.2.tar.gz (MD5: 787177b1b15aa19ffa0d61d8f508b69d)
• gc-8.2.4.tar.gz (MD5: 8901a6ed29ac35842420054772ea3441)
• gc-8.2.6.tar.gz (MD5: fc5351214bc2e854070ee3319181a467)
• gc-8.2.8.tar.gz (MD5: ad7298be1a300fc0ce75196718036c61) - latest stable release

Legend:

• stable release - the one recommended for use by default
• legacy release - the one recommended if client S/W cannot be easily ported to use the stable one
• experimental release - technology preview, the release that includes all the recent features, optimizations, widest range of supported platforms but might be not stable (nor tested) enough for the production-level S/W

See also Download page of BDWGC site: https://www.hboehm.info/gc/gc_source/