| LSQUIC | https://github.com/litespeedtech/lsquic | LiteSpeedTech | C |
| quiche | https://github.com/cloudflare/quiche | Cloudflare | Rust |
| quic-go | https://github.com/quic-go/quic-go | Marten Seemann | Go |
| aioquic | https://github.com/aiortc/aioquic | aiortc | Python |
| MsQuic | https://github.com/microsoft/msquic | Microsoft | C |
| mvfst | https://github.com/facebook/mvfst | Facebook | C++ |
| Neqo | https://github.com/mozilla/neqo | Mozilla | Rust |
| ngtcp2 | https://github.com/ngtcp2/ngtcp2 | ngtcp2 | C |
| NGINX | https://github.com/nginx/nginx | nginx | C |
| picoquic | https://github.com/private-octopus/picoquic | private-octopus | C |
| Quant | https://github.com/NTAP/quant | NetApp | C |
| Quinn | https://github.com/quinn-rs/quinn | quinn-rs | Rust |
| s2n-quic | https://github.com/aws/s2n-quic | AWS | Rust |
| XQUIC | https://github.com/alibaba/xquic | Alibaba | C |
| quicly | https://github.com/h2o/quicly | h2o | C |
| Google QUICHE | https://github.com/google/quiche | Google | C++ |
| TQUIC | https://github.com/Tencent/tquic | Tencent | Rust |
| KWIK | https://github.com/ptrd/kwik | ptrd | Java |
| QUIC kernel module | https://github.com/lxin/quic | Xin Long | C |