List of free serverless stuff for developer👇🏽
If you're looking for all programming tools around serverless (not just free). Check this page List of serverless Programming Tools

DenoLand
Run JavaScript, TypeScript, and WebAssembly at the edge, worldwide.
Tag: hosting, hosting-dynamic, hosting-static, serverless
100,000 requests per day 100 GiB data transfer per month Github integration with public & private repos Runs in all 32 network locations Free deno.dev subdomain & custom domains Automatic HTTPS / TLS Unlimited production deployments & previews Up to 10ms CPU time (not wall clock time) per request

Azure Functions Serverless
Create event-driven, scalable serverless apps in .NET, Node.js, Python, Java, or PowerShell. Build and debug locally—deploy and operate at scale in the cloud.
Tag: serverless, azure
1 million requests / month

Netlify
An intuitive Git-based workflow and powerful serverless platform to build, deploy, and collaborate on web apps
Tag: hosting, hosting-dynamic, hosting-static, serverless
Host static and serverless function Bandwith: 100GB /month Build Minutes: 300 Minutes /month Websites: Unlimited Serverless Functions: 125k per site /month Forms: 100 /site/month Identity: 1K /site/month
YepCode
All-in-one platform to connect APIs and services in a serverless environment. It brings all the agility and benefits of NoCode tools, but with all the power of use programming languages
Tag: Saas, PaaS, serverless, API, workflow, devtools, automation, code, productivity, JavaScript
Credit: 1.000 yeps/month Processes: up to 5 by team Integrations: up to 3 by team Time by execution: 5 minutes
Github Action
GitHub Actions makes it easy to automate all your software workflows, now with world-class CI-CD. Build, test, and deploy your code right from GitHub
Tag: CI-CD, serverless, cron
Free 2,000 minutes per month

Google Cloud Platform
Discover the free cloud features that come with the Google Cloud trial offer and more information on how to upgrade your account.
Tag: hosting, serverless, cloud, analytics, storage
90-day, $300 Free Trial Some free-tier products

Deta
A Cloud for the Next Billion Ideas. Build your apps in hours, deploy them in seconds.
Tag: serverless, database, hosting
Server: Python 3.7 or Node.js 12.x Unlimited Micros (MicroServer) 512 MB of RAM for each execution An execution times out after 10s Unlimited NoSQL database

Upstash
Serverless Database for Redis®. Designed for the serverless with per-request pricing and Redis API on durable storage.
Tag: redis, database, serverless
Max 10,000 Commands Daily

AWS Lambda
Compute service that runs your code in response to events and automatically manages the compute resources.
Tag: serverless, AWS
1,000,000 free requests per month Up to 3.2 million seconds of compute time per month

Autocompress: Image optimization for Bitbucket
Optimizes the images in your Bitbucket repositories
Tag: image, optimization, compression, static assets, serverless, performance, asset, hosting-static, storage
Unlimited for public repos. 14-day trial for private repos (enough to compress all your images)
Encore
The Encore backend framework let's you go from idea to running API in production in minutes, with no servers to manage. Get productive with Encore.
Tag: hosting, serverless, API, tracing, hosting-dynamic
Backend development platform Cloud hosting Distributed tracing Secrets management Generated API documentation

StaticBackend
Free and open-source self-hosted backend API enabling web and mobile developers to use common building blocks for applications. Easy to deploy Firebase alternative includes authentication, database, storage, real-time database and WebSocket, server-side functions, task scheduler, sending emails, and more.
Tag: API, database, storage, authentication, real-tie, serverless
Self-host a feature-rich backend API.

serverless
Build web, mobile and IoT applications using AWS Lambda and API Gateway, Azure Functions, Google Cloud Functions, and more.
Tag: serverless, deployment, AWS
1 User Run 1 concurrent build Up to 100K monitoring transactions/month

Nitric Deploy
Nitric Deploy builds and deploys the right infrastructure from your code in your chosen cloud. Get excellent developer experience with simple deployments.
Tag: serverless, api, aws
Unlimited Projects Single Organisation Single User 1 Concurrent Build
Cyclic.sh
Fullstack Javascript Apps: Front-end, Backend, Database, Scheduled tasks. All running with zero-config.
Tag: api, database, serverless, hosting, storage, aws, hosting-dynamic, paas
1 app 10,000 API reqs/month 1GB memory/req 1GB Object Storage (AWS S3) 1GB Database Storage (AWS DynamoDB) Unlimited blazing fast builds 3 Cron tasks/app Global deployment
100,000 requests per day Deploy up to 30 Worker scripts Runs on all 200 data centers Free workers.dev subdomain Up to 10ms CPU time per request Lowest latency after the first request Limited Workers KV edge storage
100 calls / month.

FormKiQ
Open Source Headless Document Management System (DMS) that runs in your Amazon Web Services (AWS) Cloud. Can be used for document workflows, records management, and other document storage and processing needs, using an extendable Document API.
Tag: document-management-system, serverless, aws
FormKiQ Core installs into AWS with no limits

Vercel
Vercel combines the best developer experience with an obsessive focus on end-user performance.
Tag: hosting, hosting-dynamic, hosting-static, serverless
Host static and serverless function HTTPS-enabled Custom Domains Continuous Deployment with Git High-performance Edge Network Unlimited Websites & APIs Serverless Functions in Node.js, Go, and more
no larger than 1 GB soft bandwidth limit of 100GB/month soft limit of 10 builds/hour

Appwrite
Appwrite provides web and mobile developers with a set of easy-to-use and integrate REST APIs to manage their core backend needs.
Tag: API, database, storage, authentication, serverless
Open Source

The best of AWS in seconds Up to 5 apps Shared app resources Single developer Limited throughput and database usage Basic support
Nitric
Nitric Open Source Cloud Framework is the fastest way for startup developers to build serverless apps. Launch now with AWS, Google Cloud, Azure and more.
Tag: cloud, serverless, development, framework
Open-Source Framework for cloud development: Serverless Functions + APIs Topics + Events Queues Document DBs Storage Secrets