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- Lists: Capterra, Freecode, GetApp, Hotscripts / AlternativeTo, G2, OpenAlternative, Sitelike o SaasHub: say what application you want to replace and you get great alternatives, based on user recommendations
- You might also like to see lists of software including commercial options like eBool and GetApp.
- Demos: OpensourceCMS
- Search alternatives for a program or website – more at
- Blogs
- WordPress
- CRM / ERP
- CentricCRM, TinyERP, Sequoia, OBM
- Collaboration
- .NET: Community Server, Flexwiki , Yet Another Forum
- PHP: dotProject, eGroupware, TikiWiki, PhpWiki
- Content Management System
- .NET: DotNetNuke, Umbraco
- PHP: Drupal, Joomla, WordPress
- E-commerce systems
- osCommerce, ZEN Cart, wooCommerce (WordPress)
- Enquêtes / surveys and polls
- Limesurvey, FunGL, phpESP, PHPSurveyor, PrestoPoll
- Forums
- Invision Board, phpBB, SilentumBoard, Simple Machines Forum
- Fotogallerijen / galleries
- 4Gallery, Coppermine, Pixelpost (php); nGallery (.NET)
- Help systems / Troubleshooting
- Help Center Live, osTicket
- Learning platforms / Leerplatformen
- PHP: Dokeos, Moodle
- Have also a look at (hlrnet):