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Firecamp vs MailSlurp

Firecamp is an API client similar to Postman, whereas MailSlurp is a programmable email/SMS testing platform.
FirecampOpenSource alternative to Postman MailSlurpTest, build, and automate email and SMS

Side by side

What it is
Firecamp:Firecamp is an open-source, VSCode-driven tool for building, testing and collaborating on REST, GraphQL, WebSocket and SocketIO APIs.
MailSlurp:MailSlurp provides programmable email addresses and phone numbers with APIs, SDKs and dashboards for testing and automating email and SMS workflows.
Best for
Firecamp:All-in-one API testing and collaboration
MailSlurp:Programmable email & SMS testing
Who it’s for
Firecamp:Developers who need a unified API testing and collaboration platform.
MailSlurp:Developers and QA engineers building, testing or automating email and SMS flows.
Pricing
Firecamp:Open source
MailSlurp:Freemium
Plans
Firecamp:—
MailSlurp:Free Free · Starter Free
Open source
Firecamp:Yes, 2,613 GitHub stars
MailSlurp:—
Works with
Firecamp:VSCode, REST, GraphQL, WebSocket, SocketIO
MailSlurp:Playwright, Cypress, Selenium, k6, JMeter, HubSpot, Braze, Brevo
DevHunt upvotes
Firecamp:48
MailSlurp:3
Launched on DevHunt
Firecamp:Jan 2023
MailSlurp:Sep 2024

Firecamp features

  • VSCode-driven DX. Provides a developer experience integrated with Visual Studio Code.
  • End-to-end API testing. Supports testing of REST, GraphQL, WebSocket and SocketIO endpoints.
  • API collection collaboration. Teams can share and collaborate on API collections within the platform.
  • Unified playgrounds. Create dedicated playgrounds for REST, GraphQL, WebSocket and SocketIO APIs.
  • Guest mode. Allows limited testing without an account, with full features unlocked after sign-up.
  • Open-source core. Available as an open-source alternative to Postman on GitHub.
Firecamp on DevHunt →Alternatives

MailSlurp features

  • Programmable inboxes. Create unlimited temporary or permanent email inboxes, use custom domains or connect Gmail/Outlook via API, SMTP, IMAP and webhooks.
  • Programmable phone numbers. Provision real mobile numbers for SMS, OTP and MFA, receive texts and route them into applications.
  • Device rendering & inbox placement. Preview emails on real clients and devices, audit links and images, and test inbox or spam placement.
  • AI data extraction. Convert emails, PDFs and attachments into structured JSON using prompts, schemas and OCR.
  • Shared dashboards & enterprise access. Manage inboxes, numbers and results with roles, SSO, SCIM, audit logs and team permissions.
  • Load & scale testing. Use inbox pools with k6, JMeter or Locust to verify message delivery under load.
  • Webhooks & automation. Trigger webhooks, forwarding, automatic replies and integrate with Zapier, MCP and other automation tools.
  • SDKs & REST API. Official SDKs for JavaScript, TypeScript, Python, Java, C#, PHP and direct REST API access.
MailSlurp on DevHunt →Alternatives

Based on each tool's website and DevHunt data. Details may change; check the official sites.