Antifilter-Software
- Guardian - Internet + Censorship77329
- Online censorship: Software that offers a helping hand over the firewalls - Guardian 6/0977330
- Content-control Software - Wikipedia77331
- Psiphon - Wikipedia77332
- Psiphon - Toronto77333
- Anonymizer - Wikipedia77338
- Proxy-servers - Wikipedia77339
- Circumventor - Wikipedia77340
- Peacefire - Wikipedia77341
- Internet Censorship - Wikipedia77342
- Circumvention Resources - Wikipedia77347
- Internet + Censorship - Guardian77348
- 2010 Circumvention Tool Usage Report - Harvard 10/1077349