April 23, 2026 by COSL Team
Modtools.io is COSL’s project to develop a suite of open source trust and safety tools that uphold safety and liberty as equal …
About COSL
Center for Online Safety and Liberty (COSL) is a s.501(c)(3) nonprofit acting as the parent entity for multiple independent projects aligned with our mission, to empower individuals and communities to thrive online by building safer spaces, fostering creativity, combating harm, and championing digital rights and freedom.
Our Priority Areas
Four key focus areas driving our mission forward
Safer Hosting
Maintaining online spaces that are safer both for users
and for creators.
Supporting Fans
Promoting self-expression, creativity, and connection in
fan communities.
Cyberbullying and Abuse
Treating online abuse as a preventable public health
issue.
Legal Advocacy
Standing up for freedom of expression and privacy
online.
Propose a Supported Project
Do you have a project that supports our mission and fits within one of our priority areas?
Fiscal Sponsorship Available
Looking for fiscal sponsorship from a
U.S. s.501(c)(3) nonprofit? Send your
proposal and our board will review fit.
Mission Alignment
Projects must align with our mission to empower communities through safety, creativity, and digital rights.
Priority Areas
Fit within: Safer Hosting, Supporting
Fans, Cyberbullying & Abuse, or Legal
Advocacy.
Get Involved
COSL is powered by volunteers. Support an existing project or bring your own idea— there’s a place for you here.
Volunteer
Join our team of dedicated volunteers
Propose a Project
Have an idea? We’d love to hear it
Support Us
Help us continue our important work