| Title | CMS Category |
|---|---|
| Jamroom | Social Network Solutions |
| Jcow | Social Network Solutions |
| jekyll | Blog Software Static Site Generators |
| Jigsaw | Static Site Generators |
| Joget | App Builders |
| Joomla | Traditional CMS |
| JoomLMS | Traditional CMS E-Learning |
| Jostle | Groupware Enterprise Solutions |
| Kanboard | Groupware |
| Kartris | Ecommerce |
| Kentico | CRM Solutions |
| KeystoneJS | App Frameworks |
| Kibo | Ecommerce |
| Kirby | Flat CMS |
| Known | Social Network Solutions Blog Software |
| Kyteway | E-Learning |
| la.plume | Flat CMS |
| Lavagna | Groupware |
| LeagueLineup | Specialized CMS |
| LearnUpon LMS | E-Learning |