Search.bg
- Searchable directory of Bulgarian web sites includes news, chat, forum, announcements, and games. Available in Bulgarian and English.
- http://www.search.bg/

Need.bg
- Provides database of links to Bulgarian sites arranged into categories.
- http://www.need.bg/

Register.bg
- Provides the registration and support of domain names in the top-level domain .bg, includes whois search and application form.
- http://www.register.bg/

Internet Society Bulgaria
- Non-governmental organization aimed to help in popularization of Internet in Bulgaria.
- http://www.isoc.bg/index_en.html