| bridges.torproject.org | [web](https://bridges.torproject.org/) | phw, cohosh | web application and email responder to learn bridge addresses | Twisted |
| check.torproject.org | [web](https://check.torproject.org) | arlolra | web application for determining if a visitor is using Tor or not | Go, Haskell, TorDNSEL |
| collector | collector.torproject.org and collector2.torproject.org | karsten, irl | collects Tor network data and makes it available | Java 8, Apache |
| collector | collector{1,2}.torproject.org | karsten, irl | collects Tor network data and makes it available | Java 8, Apache |
| [[./git.torproject.org]] | [gitweb.torproject.org](https://gitweb.torproject.org) | Sebastian | web frontend for browsing git repos | apache, mirror of git repositories |
| [[./git.torproject.org]] | [web](https://gitweb.torproject.org)| Sebastian | web frontend for browsing git repos | apache, mirror of git repositories |
| [[./gitlab]] | hiro | Gitweb alternative | | |
| help.torproject.org | [web](https://help.torproject.org) | tpa | help desk and torproject admin documentation (wiki) | |
| [IRC bouncer](/howto/irc) | ircbouncer.torproject.org | pastly | ZNC IRC Bouncer for Tor Project people | ZNC, Tor, TLS cert |
| onion.torproject.org | [web](https://onion.torproject.org) | weasel | list of onion services run by the Tor project | Apache?, etc.? |
| onionoo.torproject.org | | karsten, irl | web-based protocol to learn about currently running Tor relays and bridges | Java 8, Varnish |
| ooni.torproject.org | [web](https://ooni.torproject.org) | hellais | open observatory of network interference | |
| [[./onionperf]] | | hiro, irl | Onion and Tor performance measurements for metrics | OnionPerf is used to run performance measurements over the Tor network |
| [[./onionperf]] | | hiro, irl | OnionPerf is used to run performance measurements over the Tor network | |