A popup extension to give easy access to online judges contests schedule. Our vision for KONTESTS is to provide an easy & fast tool for programmers to access online contests information; therefore a one click popup browser extension accessing online judges contests schedule is a must. The extension was developed during the 12-hours Local Hack Day (https://localhackday.mlh.io) 2018 hackathon. Supported sites: - Codeforces - Codeforces::Gym - TopCoder - AtCoder - CS Academy - CodeChef - HackerRank - HackerEarth - Kick Start - LeetCode - A2OJ Credit goes to kontests.net for providing the contests data through their APIs.