HTTP/2 200
date: Tue, 30 Dec 2025 08:54:38 GMT
content-type: text/html; charset=utf-8
cf-ray: 9b60503dfceb755c-BLR
cf-cache-status: MISS
cache-control: public, max-age=60
server: cloudflare
strict-transport-security: max-age=31536000; includeSubDomains
vary: Host, Accept-Encoding
via: 1.1 heroku-router
content-security-policy: block-all-mixed-content; default-src 'self' https://cdn.plaid.com/; img-src 'self' https://images.opencollective.com https://next-images.opencollective.com https://pdf.opencollective.com data: *.paypal.com *.paypalobjects.com opencollective.com blog.opencollective.com blob: i.ytimg.com storage.googleapis.com cdn-logos.gocardless.com opencollective-production.s3.us-west-1.amazonaws.com opencollective-production.s3-us-west-1.amazonaws.com; worker-src 'self'; style-src 'self' 'unsafe-inline' https://hcaptcha.com https://*.hcaptcha.com https://challenges.cloudflare.com; connect-src 'self' https://opencollective-prod-api.herokuapp.com https://pdf.opencollective.com https://rest.opencollective.com https://ml.opencollective.com https://oficollective.com https://oscollective.org wtfismyip.com *.paypal.com *.paypalobjects.com sentry.io *.sentry.io atlas.shopifycloud.com atlas.shopifysvc.com country-service.shopifycloud.com maps.googleapis.com https://wise.com https://transferwise.com https://sandbox.transferwise.tech https://hcaptcha.com https://*.hcaptcha.com https://challenges.cloudflare.com https://www.google.com https://api.cryptonator.com https://plausible.io opencollective-production.s3.us-west-1.amazonaws.com opencollective-production.s3-us-west-1.amazonaws.com https://production.plaid.com/; script-src 'self' 'nonce-79b5e539-8f35-4854-a29d-26350a29fccf' maps.googleapis.com js.stripe.com *.paypal.com *.paypalobjects.com https://hcaptcha.com https://js.hcaptcha.com https://*.hcaptcha.com https://challenges.cloudflare.com https://www.google.com https://plausible.io https://cdn.plaid.com/link/v2/stable/link-initialize.js; frame-src blob: www.youtube.com www.youtube-nocookie.com opencollective.com anchor.fm podcasters.spotify.com player.vimeo.com js.stripe.com *.paypal.com *.openstreetmap.org https://wise.com https://transferwise.com https://sandbox.transferwise.tech https://hcaptcha.com https://*.hcaptcha.com https://challenges.cloudflare.com https://www.google.com https://cdn.plaid.com/; object-src opencollective.com
nel: {"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1}
origin-agent-cluster: ?1
referrer-policy: no-referrer
report-to: {"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=qtCB%2BAvJqzaJ6kq2AuUsyQi6Uk5smfZ5tmfWoBT9Kp4%3D\u0026sid=af571f24-03ee-46d1-9f90-ab9030c2c74c\u0026ts=1767084877"}],"max_age":3600}
reporting-endpoints: heroku-nel="https://nel.heroku.com/reports?s=qtCB%2BAvJqzaJ6kq2AuUsyQi6Uk5smfZ5tmfWoBT9Kp4%3D&sid=af571f24-03ee-46d1-9f90-ab9030c2c74c&ts=1767084877"
x-content-type-options: nosniff
x-dns-prefetch-control: off
x-download-options: noopen
x-frame-options: SAMEORIGIN
x-permitted-cross-domain-policies: none
x-powered-by: Next.js
x-ratelimit-limit: 20
x-ratelimit-remaining: 19
x-ratelimit-reset: 1767084938
x-xss-protection: 0
oc-backend: frontend
oc-environment: production
content-encoding: gzip
alt-svc: h3=":443"; ma=86400
SageMath - Open Collective
SageMath
Creating a viable free open source alternative to Magma, Maple, Mathematica and Matlab Become a financial contributor.
Financial Contributions Backer
Become a backer for $5.00 per month and support us
Sponsor
Become a sponsor for $100.00 per month and support us
Starts at $100 USD / month
Donation
Make a custom one-time or recurring contribution.
Top financial contributors Individuals
Richard K Collins
$1,200 USD since Apr 2021
bitwo
$160 USD since May 2023
Robert
$60 USD since Sep 2022
Sinan Kapcak
$50 USD since Dec 2020
Kiran Kedlaya
$50 USD since Dec 2020
John Hudson
$50 USD since Mar 2021
Marshall Hampton
$50 USD since Apr 2021
SageMath is all of us Our contributors 43 Thank you for supporting SageMath.
All contributors Team Financial contributors
Transparent and open finances.
Added funds #906086
View Details
Contribution #651014
View Details
Contribution #651014
View Details
Estimated annual budget
$2,105.72 USD
Let’s get the ball rolling!
News from SageMath Updates on our activities and progress.
Collaborative, transparent, financial management tool