Description: OpenStreetMap is a free, open-source, crowd-sourced map of the world. Volunteers collect map data using GPS devices, aerial imagery, local knowledge, and other free sources to create and update the map database.
Type: software
Pricing: Open Source
Description: Quizlet is a popular online study application that allows users to create their own flashcards and study sets or access pre-made sets created by other users. It includes study modes like Learn, Write, Spell, Test, Match, and more to help reinforce memorization.
Type: software