Antifilter-Software
- Guardian - Internet + Censorship 77329
- Online censorship: Software that offers a helping hand over the firewalls - Guardian 6/09 77330
- Content-control Software - Wikipedia 77331
- Psiphon - Wikipedia 77332
- Psiphon - Toronto 77333
- Anonymizer - Wikipedia 77338
- Proxy-servers - Wikipedia 77339
- Circumventor - Wikipedia 77340
- Peacefire - Wikipedia 77341
- Internet Censorship - Wikipedia 77342
- Circumvention Resources - Wikipedia 77347
- Internet + Censorship - Guardian 77348
- 2010 Circumvention Tool Usage Report - Harvard 10/10 77349