Callisto
Callisto is a San Francisco-based 501(c)(3) nonprofit operating Callisto Vault, an encrypted platform that lets U.S. college sexual assault survivors document incidents and match with others harmed by the same perpetrator, supported by trauma-informed advocates and funded by donations and grants.
- Company typePrivate
- Founded2015
- HeadquartersSan Francisco, United States
- Headcount11–50
- GTM typeB2C
- OfferingServices
What Callisto does
Callisto is a San Francisco-based 501(c)(3) nonprofit organization founded in 2015 to build technology that addresses serial sexual assault on U.S. college campuses. Its core product, Callisto Vault, is an encrypted, survivor-controlled web platform offered free of charge to any U.S. college student, staff, or faculty member with a .edu email address. The platform consists of two primary tools: an Incident Log that produces a timestamped, encrypted record of an assault accessible only to the account holder, and a Matching System that detects when two or more survivors have entered the same perpetrator identifiers and then connects both parties with a trauma-informed confidential advocate. The underlying architecture is cryptographic rather than AI-based: access controls are designed so that even Callisto employees cannot decrypt user identifying information or perpetrator designations, with matched access granted only via advocate-side decryption.
Callisto firmographics
Firmographics- Name
- Callisto
- Legal name
- Callisto
- Website
- https://projectcallisto.org
- Company type
- Private
- Founded year
- 2015
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Callisto is a San Francisco-based 501(c)(3) nonprofit operating Callisto Vault, an encrypted platform that lets U.S. college sexual assault survivors document incidents and match with others harmed by the same perpetrator, supported by trauma-informed advocates and funded by donations and grants.
- Ownership category
- akta.pro rank
Callisto industry classification
Industry- Product category
- Survivor Support Technology
- NAICS
- Other Individual and Family Services (624190)
- SIC
- Services-Social Services (8300)
- akta.pro primary industry
- Content Moderation, Safe Messaging & Classroom Communication Safety (EDAFALAE)
Keywords
Where Callisto is headquartered
LocationHeadquarters
- HQ city
- San Francisco
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Callisto business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure
Revenue model
- Donations and Fundraising: Callisto is funded primarily through individual donations, corporate sponsorships, and fundraising campaigns. The organization accepts various donation methods including one-time gifts, monthly recurring donations, DAF donations, stock gifts, cryptocurrency, and corporate giving programs.
- Foundation and Institutional Grants: Major funding from institutional donors such as Arnold Ventures ($200,000 emergency investment), The Wild Gifting Project (matching donation campaigns), and other foundations supporting survivor services and social justice causes.
- Merchandise Sales: Callisto sells branded merchandise including shirts, hoodies, mugs, totes, and hats through Bonfire store, with proceeds supporting the organization's operations.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Others | Free platform access for U.S. college students |
Go-to-market motion2 records
Distribution channels1 record
Marketing channels8 records
Callisto product offering
Product offeringCore offering
Callisto operates Callisto Vault, an encrypted, survivor-controlled web platform where U.S. college sexual assault survivors can document their experiences through timestamped Incident Logs and match with others harmed by the same perpetrator. When two or more survivors enter the same perpetrator's identifiers, a match occurs and both are connected with a confidential trauma-informed advocate from partner organization Ampersands Advocacy Resources. The platform is provided completely free to any U.S. college student, staff, or faculty member with a .edu email address.
Product overview
Callisto is a nonprofit technology organization offering Callisto Vault, an encrypted platform designed to empower campus sexual assault survivors. The platform consists of two primary tools: the Incident Log, which enables survivors to create timestamped encrypted records of their experiences, and the Matching System, which connects survivors who have been harmed by the same perpetrator. When a match occurs, survivors are connected with confidential trauma-informed advocates provided through a partnership with Ampersands Advocacy Resources. Additional services include workshops and consulting for campus partners.
Differentiator
Problem solved
Functional benefit
Brands
- Callisto Vault: An encrypted platform enabling survivors to create timestamped records of assault and match with others harmed by the same perpetrator.
Products and services
- Callisto Vault An encrypted, survivor-controlled web platform that enables campus sexual assault survivors to securely document their experiences through timestamped Incident Logs and find others harmed by the same perpetrator through a privacy-preserving matching system. Available free of charge to U.S. college students, staff, and faculty with .edu email addresses. When matches occur, survivors are connected with confidential trauma-informed advocates.
- Workshops & Consulting Training and consulting services offered by Callisto to campus partners and organizations on sexual assault prevention and survivor support. Designed for higher education institutions seeking to strengthen their survivor response capabilities.
Quantifiable outcome
- 90% of campus sexual assaults are committed by serial perpetrators who offend an average of 6 times before graduating
- +2 more outcomes
Companies that use Callisto
Customer profileNamed customers1 record
Segments1 record
Ideal customer profiles1 record
Callisto technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Callisto partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- Ampersands Advocacy ResourcescoreAmpersands Advocacy Resources provides vetted, trauma-informed confidential advocates who support matched users of Callisto Vault. When survivors match in the system, an advocate from this organization reaches out to help navigate options. Advocates are bound by confidentiality obligations and help survivors make informed decisions about coming forward.
- Various College CampusescoreCallisto partners with colleges and universities across the United States. Students at partner institutions can access Callisto Vault using their .edu email addresses. Campus ambassadors organize on these campuses to raise awareness and support survivors.
Scale indicators7 records
Recent moves6 records
Expansion highlights4 records
Callisto competitors and assessment
Company assessmentDirect peers
- RAINN (Rape, Abuse & Incest National Network): RAINN is the largest U.S. anti-sexual-violence organization, operating the National Sexual Assault Hotline and resources for survivors; it is the most direct mission-comparable peer to Callisto's survivor-support work, though it delivers services via hotline rather than an encrypted tech platform.
- Joyful Heart Foundation: Joyful Heart Foundation is a national organization dedicated to healing, educating, and advocating for survivors of sexual assault, domestic violence, and child abuse; it shares Callisto's survivor-empowerment mission and national awareness work.
- Culture of Respect: Culture of Respect is a higher-education initiative that helps colleges and universities prevent and respond to campus sexual violence through curricula and assessment tools; it overlaps directly with Callisto's higher-ed prevention and survivor-support scope.
- End Rape On Campus (EROC): EROC is a survivor-led organization focused specifically on addressing campus sexual violence through policy advocacy, Title IX support, and student organizing; it shares Callisto's higher-education survivor focus and campus-organizing GTM motion.
- PAVE (Promoting Awareness | Victim Empowerment): PAVE is a national nonprofit that promotes awareness and empowers survivors of sexual violence through education, advocacy, and survivor-led programs; it overlaps directly with Callisto on survivor-centered education and community organizing.
- It's On Us: It's On Us is a sexual assault prevention campaign and nonprofit specifically focused on college and university campuses, training student leaders and engaging campus culture; it is highly comparable to Callisto's campus-first, student-centered model.
- National Center for Victims of Crime: The National Center for Victims of Crime advocates for victims' rights and provides resource referrals and support across crime categories including sexual assault; it shares Callisto's nonprofit survivor-services and advocacy-adjacent positioning.
- National Sexual Violence Resource Center (NSVRC): NSVRC is the central information and resource hub for sexual violence prevention and survivor response in the U.S.; it overlaps with Callisto on survivor resources, awareness content, and national prevention infrastructure.
Emerging players
- Crisis Text Line: Crisis Text Line operates a technology-enabled, text-based platform providing trained-counselor support to people in crisis; it parallels Callisto's tech-platform approach to survivor support but serves a much broader crisis population rather than specializing in sexual assault.
Others
- The National Domestic Violence Hotline: The Hotline is the principal U.S. resource for domestic-violence survivors, offering 24/7 confidential support via phone, chat, and text; it is thematically adjacent to Callisto's survivor-services work but focuses on domestic rather than campus sexual violence.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Callisto social profiles
Digital presenceCallisto financial estimates
Financial estimateRevenue estimate
Valuation estimate
Callisto leadership team
Management profileNumber of profiles
Profiles1 record
Callisto funding detail
Funding detailFunding overview
Funding rounds2 records
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Callisto M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Callisto
What does Callisto do?
Callisto operates Callisto Vault, an encrypted, survivor-controlled web platform where U.S. college sexual assault survivors can document their experiences through timestamped Incident Logs and match with others harmed by the same perpetrator. When two or more survivors enter the same perpetrator's identifiers, a match occurs and both are connected with a confidential trauma-informed advocate from partner organization Ampersands Advocacy Resources. The platform is provided completely free to any U.S. college student, staff, or faculty member with a .edu email address.
Is Callisto a public or private company?
Callisto is a private company. It is classified as nonprofit foundation owned and is currently operating.
When was Callisto founded?
Callisto was founded in 2015. It employs 11 to 50 people.
Where is Callisto based?
Callisto is headquartered in San Francisco, United States, in the North America region.
How does Callisto make money?
Three revenue lines are on record. Donations and Fundraising is the primary driver. The others are foundation and Institutional Grants and merchandise Sales.
Who are Callisto's main competitors?
Direct peers on record are RAINN (Rape, Abuse & Incest National Network), Joyful Heart Foundation, Culture of Respect, End Rape On Campus (EROC), PAVE (Promoting Awareness | Victim Empowerment), It's On Us, National Center for Victims of Crime and National Sexual Violence Resource Center (NSVRC). Crisis Text Line is listed as an emerging player. The National Domestic Violence Hotline is listed as an others.
Does Callisto have an API?
No public API is recorded for Callisto.
What industry is Callisto in?
Callisto's product category is Survivor Support Technology. Its primary akta.pro industry code is EDAFALAE, Content Moderation, Safe Messaging & Classroom Communication Safety. Its NAICS code is 624190 and its SIC code is 8300.