OSRM - Utilities, Application Utilities, and Mapping APIs
FRRouting - FRRouting (FRR) is an IP routing protocol suite for Linux and Unix platforms which
pgRouting - Repository contains pgRouting library. Development branch is "develop", stable branch is "master" - pgRouting/pgrouting
VyOS - VyOS in an open source Linux-based operating system sold and distributed by Sentrium corporations. It is geared toward IT specialists and network administrators for the purpose of securing network and company data... read more.
OPNsense - OPNsense® you next open source firewall. Free Download. High-end Security Made Easy™. Offers Intrusion Prevention, Captive Portal, Traffic Shaping and more.
OpenRouteService.org - The spatial services API with plenty of features.