free-for-dev

Free, temporary email for testing.

Transactional email service, free for 1000 emails per month, with unlimited domains, team members, webhooks and message routes in the free plan.

Open-source anonymous email forwarding, create unlimited email aliases for free

Open source, anonymous email alias/forwarding solution with PGP encryption, reply capability, 10 random & 1 custom alias on the free plan with developer API & CLI.

10 API requests per hour for email verification, IP, and phone number validation in the free tier. No Credit Cards are required.

9,000 emails/month, 300 emails/day free

Free public DNS Resolver, which is fast and secure (encrypt your DNS query), provided by Cloudflare. Useful to bypass your internet provider's DNS blocking, prevent DNS query spying, and

Free DNS service with API and lots of other free DNS features included.

A free tool to search a username across 90+ social platforms to find matching profiles.

Fine-grained authorization as a service for applications and APIs. Free up to 1000 MAUs and 100 authorizer instances.

Seamless Integration of SSO, MFA, passwordless auth and more. Includes SDKs for frontend and backend apps. Free up to 1000 MAUs and five identity providers.

Hosted SSO. The free plan includes 25,000 MAUs, unlimited Social Connections, a custom domain, and more.

Bring Passwordless, OTPs, 2FA, SSO to your apps in minutes. All Front-end included. Free up to 5000 MAUs.

Authentication login and access control, unlimited identity providers for any project. Facebook, Google, Twitter and more. The first 1000 API calls are free.

A free cloud-based code snippet manager for personal and collaborative code.

Free all-on-one bookmark manager, tab manager, and task manager in a customizable online desktop with folder collaboration.

Chat app designed for teams. Free for public access group, unlimited users, history, and integrations. also, it provides a self-hostable open-source version.

Calendly is the tool for connecting and scheduling meetings. The free plan provides 1 Calendar connection per user and Unlimited sessions. Desktop and Mobile apps are also offered.

Find the perfect time and date for a meeting. Simple to use, works great for small and large groups.

Private document editor hosted in Canada. Write, format, collaborate, and publish documents with clean public links. Data is never used for AI training. Free plan includes 50 MB storage, up to 3 public links, and export to PDF, Word, and Markdown.

Compatible with AWS S3 - APIs, interface operations, CLI, and other upload methods, upload and store files from the IPFS and Arweave networks in a safe, convenient, and efficient manner. Registered users can get 6 GB of IPFS storage and 300MB of Arweave storage for free. Any Arweave file uploads smaller than 150 KB are free.

Backblaze B2 cloud storage. Free 10 GB (Amazon S3-like) object storage for unlimited time

8base is a full-stack low-code development platform built for JavaScript developers built on top of MySQL and GraphQL and serverless backend-as-a-service. It allows you to start building web applications quickly using a UI app builder and scale quickly, The Free tier includes rows: 2,500, Storage: 500, Serverless computing: 1Gb/h, and client app users: 5.

Looks like a spreadsheet, but it's a relational database unlimited bases, 1,200 rows/base, and 1,000 API requests/month

Aiven offers free PostgreSQL, MySQL and Valkey (Redis compatible) plans on its open-source data platform. Single node, 1 CPU, 1GB RAM, and for PostgreSQL and MySQL, 1GB storage. Easy migration to more extensive plans or across clouds.

Open-Source feature flags & A/B testing. Configuration as Code & Fully Typed Typescript SDKs. Strong integration with Frameworks such as Next.js & React. Generous free tier and cheap scaling options.

Realtime messaging service with presence, persistence and guaranteed delivery. The free plan includes 3m messages per month, 100 peak connections, and 100 peak channels.

RabbitMQ as a Service. Little Lemur plan: max 1 million messages/month, max 20 concurrent connections, max 100 queues, max 10,000 queued messages, multiple nodes in different AZ's