Foundler - Online hackathon weekends. Attend every other week.
FriendZone - Make new friends based on your interests and hobbies
HackHub - Host tech events and hackathons with ease 👨💻🛠
AiryCam - Look good in every photo
Confs.tech - Open source list of tech conferences: JS / Ruby / Data etc.
Open Camera - Open Camera is an open-source camera app for Android phones and tablets.