Foundler - Online hackathon weekends. Attend every other week.
Evercontact - Your contacts always up to date and automatically with Evercontact.
Confs.tech - Open source list of tech conferences: JS / Ruby / Data etc.
CONTACTBOX - CONTACTBOX combines the simplicity of an address book with effective functions of a CRM system.
HackHub - Host tech events and hackathons with ease 👨💻🛠
Pobuca Connect - Connect with your contacts.