Startup Security Program by Templarbit - Security practices & tools required to close large deals
Foundler - Online hackathon weekends. Attend every other week.
The Security Checklist - The Practical Security Checklist for Web Developers
CoFoundersLab - Meet 250,000+ entrepreneurs online
SaaS 1000 - Free exportable list of the fastest growing SaaS companies
HackHub - Host tech events and hackathons with ease 👨💻🛠