foropensource

AppSignal APM (sponsored open source account)

Free sponsored AppSignal account for open-source software and "for good" projects, with core monitoring features: error tracking, performance monitoring, host monitoring, anomaly detection, uptime monitoring and log management. No named tier or hard limits published on the page.

Eligibility: for the project; For open-source maintainers and software development volunteers / "for good" projects; no further published requirements.

How to apply: Email support@appsignal.com with the subject "Hi AppSignal, can I get a sponsored account?" to request a sponsored account.

last verified 2026-07-06

BugSnag error monitoring (open source / non-profit plan)

Free standard plan for open source projects and non-profits: unlimited BugSnag usage with up to 15,000 events per month, up to 15 collaborators, and access to the Releases Dashboard and Session Tracking.

Eligibility: for the project; OSI license required; non-commercial only; Requires an open source license (or non-profit certificate); project must be non-commercial, non-political, non-offensive, non-religious, and must display the BugSnag logo with a backlink on its site.

How to apply: Create a free BugSnag account, then submit the request form on the offer page with your license, README/About page, account email, and proof of the BugSnag logo backlink.

last verified 2026-07-06

CatchJS JavaScript error tracking

Complimentary (free) CatchJS subscription for open source software projects; site states they give free subscriptions to open source projects out of appreciation for the OSS community. Exact plan tier not specified on the page.

Eligibility: for the project; Must be part of an open source software project; detailed criteria not published.

How to apply: Apply via the form at https://catchjs.com/Contact/OpenSource (linked "Click here to apply" on the homepage).

last verified 2026-07-06

elmah.io error logging and uptime monitoring (Small Business subscription)

Free Small Business subscription to elmah.io (error logging and uptime monitoring for .NET) to monitor your open source project. Subscription may only be used for the open source project itself.

Eligibility: for the project; non-commercial only; public repo required; Project must be publicly available on GitHub, Bitbucket, or similar and be open source. Requires a backlink to elmah.io from the project's landing page or repository. Subscription restricted to monitoring that project only.

How to apply: Get in contact with elmah.io (via site contact) to redeem the free subscription, per the open source sponsorship page.

last verified 2026-07-06

Scout Monitoring (Large plan for OSS)

Free access to Scout's Large plan with full features: application traces, error monitoring, log management, query analysis, and alerting. Supports Ruby, Python, PHP, and Elixir.

Eligibility: for the project; OSI license required; public repo required; Requires an open source license (MIT, Apache, GPL, etc.) and the project must not be used as part of a commercial SaaS product.

How to apply: Open a support ticket via the "Apply for Free Access" link on the offer page with a link to your repo and a brief description.

last verified 2026-07-06

Sentry Open-Source Sponsorship Plan (error monitoring and observability)

Free sponsored plan with Business features and no term limit: 5M errors, 5,000GB logs, 1B spans, 100K replays, 500 cron monitors, 25 uptime monitors, 3K continuous profile hours, 150 UI profile hours, 10GB attachments, 1,000 size analysis uploads, and Seer for 5 active contributors; overage budget can be enabled.

Eligibility: for the project; OSI license required; Project must be released under a friendly license like Apache or MIT and qualify as genuinely open source software.

How to apply: Application form on the offer page: provide name/email/website, select "Open-Source" company type, Sentry org details, project description and GitHub repository link.

last verified 2026-07-06