Add Anchor and Solo (#588)

* Add Solo (non-free Project Management)

* Add Anchor (non-free Money/Budgeting)

non-free.md

@@ -39,6 +39,7 @@
 
 ## Money, Budgeting and Management
 
+  * [Anchor](http://theanchorapp.com/) - Anchor is invoicing system that intergates with Strip and Paypal. Includes features such as: reporting, dashboard and no client limit. ([Demo](http://theanchorapp.com/demo/admin-login)) `PHP`
   * [FusionInvoice](https://www.fusioninvoice.com) `⊘ Proprietary` - FusionInvoice is an invoicing system for freelancers and small businesses. `PHP`
   * [Manager](http://manager.io/server) `⊘ Proprietary` - Online accounting software for small businesses. `Mono`
   * [Pancake](http://pancakeapp.com/) `⊘ Proprietary` - Online invoicing, project management, time tracking and proposal software. `PHP`
@@ -52,6 +53,7 @@
 ## Project Management
   * [Active Collab](https://www.activecollab.com/) - Project management  - `⊘ Proprietary` `PHP`
   * [Duet](https://duetapp.com/) - `⊘ Proprietary` Invoicing and project management with an integrated client portal. ([Demo](https://duetapp.com/demo/#dashboard)) `PHP`
+  * [Solo](http://www.getsoloapp.com/) - Solo is a free project management app created for freelancers. Create contacts, manage tasks, upload files, track project progress, and keep notes. ([Demo](http://www.getsoloapp.com/demo/)) `PHP`
 
 ## Self-hosting Solutions
   * [Axigen](https://www.axigen.com/mail-server/free/) - `⊘ Proprietary` Great alternative to open source. It's a turnkey messaging solution, perfect for small & micro businesses, integration projects or test environments.