Foilen is the private company of Simon Levesque. Since he works full-time at a company, Foilen brings all of his computing hobbies together.
| Activity | Sources of income |
|---|---|
| Computer science videos and articles | Advertising and donations |
| Book “Le petit livre du hacker 2013” | Sale of the physical book (the electronic version is free) and donations |
| Consulting for small websites | Consultation |