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

Datadog observability platform (Open Source Projects program)

Free Datadog account for the project's own infrastructure: cloud observability and security platform including infrastructure and APM monitoring, 1,000+ integrations, code analysis and profiling, and database/user activity monitoring. Host counts and telemetry event volumes may be limited.

Eligibility: for the project; OSI license required; non-commercial only; project at least 12 months old; Minimum 5 regular contributors; at least 2 maintainers must work for different companies. Monitored infrastructure must directly support the project itself (monitoring third-party instances of the project is out of scope). Projects are asked to tell the community how they use Datadog.

How to apply: Application form on the partner program page; Datadog evaluates submissions case by case.

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

Size Analysis (free for open source)

Emerge's mobile app Size Analysis free for non-commercial open source projects: automated size insights, size tracking on every pull request, public shareable build links, dynamic README badges, and up to 5 maintainer accounts.

Eligibility: for the project; non-commercial only; public repo required; Valid only for non-commercial open source projects.

How to apply: Submit your repository via the Google Form linked on the open-source page to receive setup instructions.

last verified 2026-07-07

Healthchecks.io Business plan (cron job monitoring)

Business plan free of charge for open-source projects and nonprofits: monitor 100 jobs, 1,000 log entries per job, 50 SMS/WhatsApp credits, 20 phone call credits, and email support (vs. the generic free tier's 20 jobs and no credits).

Eligibility: for the project; Open-source projects and nonprofits qualify; no further criteria stated.

How to apply: Contact Healthchecks.io (via the contact/about page) to get set up.

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

WebGazer uptime and cron monitoring (open source program)

Comprehensive monitoring services at no cost for eligible open source projects: website monitoring (HTTP monitors), cron job monitoring (heartbeat monitors), and hosted status pages.

Eligibility: for the project; Must be an open source project; approval based on application details, no further criteria published.

How to apply: Submit the application form on the offer page with project name, contact email, project URL, repository URL, and a project description; questions to support@webgazer.io.

last verified 2026-07-06