to[icon] is described as 'Created as a way to effectively illustrate sometimes complex actions, to[icon] provides high quality icon collections spanning series like "Hatches", "Flat Shadows", "Isometric" and "Blueprint"'. There are more than 25 alternatives to to[icon], not only websites but also apps for a variety of platforms, including Self-Hosted solutions, Mac, Windows and Linux. The best alternative is Font Awesome, which is both free and Open Source. Other great sites and apps similar to to[icon] are Flaticon (Freemium), Fork Awesome (Free, Open Source), Line Awesome (Free) and motosha (Free).
Fork Awesome is now a community effort based on Font Awesome by Dave Gandy. We love Font Awesome but here's why we forked it into Fork Awesome 1.1. One Font, 744 Icons In a single collection, Fork Awesome is a pictographic language of web-related actions.