Radix Icons - A crisp set of 15×15 icons. Open source.
Logo Dust - Free logo designs for your projects, added every week
Bjango App Icon Templates - App icon templates for PS, Ai, Sketch and Affinity Designer
Blog Post Metrics - Analyze RSS feeds for share count.
MakeAppIcon - MakeAppIcon resizes and optimizes your icon designs into all formats needed for iOS and Android mobile app!
DrumUp - Content Marketing & Social Media Management Software