App Engine - 28 frontend instance hours per day, 9 backend instance hours per day
Cloud Firestore - 1GB storage, 50,000 reads, 20,000 writes, 20,000 deletes per day
Compute Engine - 1 non-preemptible e2-micro, 30GB HDD, 5GB snapshot storage (restricted to certain regions), 1 GB network egress from North America to all region destinations (excluding China and Australia) per month
Cloud Storage - 5GB, 1GB network egress
Cloud Shell - Web-based Linux shell/basic IDE with 5GB of persistent storage. 60 hours limit per week
Cloud Pub/Sub - 10GB of messages per month
Cloud Functions - 2 million invocations per month (includes both background and HTTP invocations)
Cloud Run - 2 million requests per month, 360,000 GB-seconds memory, 180,000 vCPU-seconds of compute time, 1 GB network egress from North America per month
Google Kubernetes Engine - No cluster management fee for one zonal cluster. Each user node is charged at standard Compute Engine pricing
BigQuery - 1 TB of querying per month, 10 GB of storage each month
Cloud Build - 120 build-minutes per day
Cloud Source Repositories - Up to 5 Users, 50 GB Storage, 50 GB Egress
3Cols - A free cloud based code snippet manager for personal and collaborative code.
Bitwarden — The easiest and safest way for individuals, teams, and business organizations to store, share, and sync sensitive data.
Braid — Chat app designed for teams. Free for public access group, unlimited users, history, and integrations. also it provide self-hostable open-source version.
cally.com — Find the perfect time and date for a meeting. Simple to use, works great for small and large groups.
Calendly — Calendly is the tool for connecting and scheduling meetings. Free plan provides 1 Calendar connection per user and Unlimited meetings. Desktop and Mobile apps also provided.
Discord — Chat with public/private rooms. Markdown text, voice, video, and screen sharing capabilities. Free for unlimited users.
Telegram — Telegram is for everyone who wants fast and reliable messaging and calls. Business users and small teams may like the large groups, usernames, desktop apps and powerful file sharing options.
Duckly — Talk and collaborate in real-time with your team. Pair programming with any IDE, terminal sharing, voice, video and screen sharing. Free for small teams.
Dyte - The most developer-friendly live video & audio SDK, featuring collaborative plugins to enhance productivity and engagement. The free tier includes 10,000 minutes of live video/audio usage every month.
evernote.com — Tool for organizing information. Share your notes and work together with others
Fibery — Connected workspace platform. Free for single user, up to 2 GB disk space.
Filestash — A Dropbox-like file manager that connects to a range of protocols and platforms: S3, FTP, SFTP, Minio, Git, WebDAV, Backblaze, LDAP and more.
flock.com — A faster way for your team to communicate. Free Unlimited Messages, Channels, Users, Apps & Integrations
Flowdash — Automate business workflows. Free tier for up to 3 users, 1000 tasks, and 3 workflows.
flowdock.com — Chat and inbox, free for teams up to 5
Gather - A better way to meet online. Centered around fully customizable spaces, Gather makes spending time with your communities just as easy as real life. Free for up to 25 concurrent users.
GitDailies - Daily reports of your team's Commit and Pull Request activity on GitHub. Includes Push visualizer, peer recognition system, custom alert builder. Free tier has unlimited users, 3 repos, 3 alert configs.
gitter.im — Chat, for GitHub. Unlimited public and private rooms, free for teams up to 25
hangouts.google.com — One place for all your conversations, for free, need a Google account
HeySpace - Task management tool with chat, calendar, timeline and video calls. Free for up to 5 users.
helplightning.com — Help over video with augmented reality. Free without analytics, encryption, support
ideascale.com — Allow clients to submit ideas and vote, free for 25 members in 1 community
Igloo — Internal portal for sharing documents, blogs and calendars etc. Free for up to 10 users.
Keybase — Keybase is a cool FOSS alternative to Slack, it keeps everyone's chats and files safe, from families to communities to companies.
Google Meet — Use Google Meet for your business's online video meeting needs. Meet provides secure, easy-to-join online meetings.
/meet for Slack - Start Google Meetings directly from Slack by using /meet in any channel, group or DM. Free without any limitations.
Livecycle — Livecycle is an inclusive collaboration platform that makes workflows frictionless for cross-functional product teams and open source projects.
MarkUp — MarkUp lets you collect feedback directly on top of your websites, PDFs and images.
meet.jit.si — One click video conversations, screen sharing, for free
Microsoft Teams — Microsoft Teams is a chat-based digital hub that brings conversations, content, and apps together in one place all from a single experience. Free for up to 500k users.
Miro - Scalable, secure, cross-device and enterprise-ready team collaboration whiteboard for distributed teams. With freemium plan.
nootiz - The go-to tool for gathering and managing visual feedback on any website
Notion - Notion is a note-taking and collaboration application with markdown support that also integrates tasks, wikis, and databases. The company describes the app as an all-in-one workspace for note-taking, project management and task management. In addition to cross-platform apps, it can be accessed via most web browsers.
Nuclino - A lightweight and collaborative wiki for all your team's knowledge, docs, and notes. Free plan with all essential features, up to 50 items, 5GB total storage.
PageShare.dev - Adds visual reviews capabilities into GitHub Pull Requests with no need to deploy websites. Free for up to 10 pages each month and 100MB of storage in total.
Pendulums - Pendulums is a free time tracking tool which helps you to manage your time in a better manner with an easy to use interface and useful statistics.
Raindrop.io - Private and secure bookmarking app for macOS, Windows, Android, iOS and Web. Free Unlimited Bookmarks and Collaboration.
element.io — A decentralized and open source communication tool built on Matrix. Group chats, direct messaging, encrypted file transfers, voice and video chats, and easy integration with other services.
Rocket.Chat - Shared inbox for teams, secure, unlimited and open source.
seafile.com — Private or cloud storage, file sharing, sync, discussions. Private version is full. Cloud version has just 1 GB
Sema - Free developer portfolio tool able to consolidate and snapshot contributions across multiple repositories into a single report.
Slab — A modern knowledge management service for teams. Free for up to 10 users.
slack.com — Free for unlimited users with some feature limitations
Spectrum - Create public or private communities for free.
StatusPile - A status page of status pages. Track the status pages of your upstream providers.
Stickies - Visual collaboration app used for brainstorming, content curation, and notes. Free for up to 3 Walls, unlimited users, 1 GB storage.
talky.io — Free group video chat. Anonymous. Peer‑to‑peer. No plugins, signup, or payment required
Teamhood - Free Project, Task and Issue tracking software. Supports Kanban with Swimlanes and full Scrum implementation. Has integrated time tracking. Free for 5 users and 3 project portfolios.
Tefter - Bookmarking app with a powerful Slack integration. Free for open-source teams.
TeleType — share terminals, voice, code, whiteboard and more. no sign-in required, end-to-end encrypted collaboration for developers.
TimeCamp - Free time tracking software for unlimited users. Easily integrates with PM tools like Jira, Trello, Asana, etc.
Tree Schema — Data catalog and metadata management with APIs to manage data lineage as code. Free for teams of up to 5 users.
twist.com — An asynchronous-friendly team communication app where conversations stay organized and on-topic. Free and Unlimited plans available. Discounts provided for eligible teams.
BookmarkOS.com - Free all-on-one bookmark manager, tab manager, and task manager in a customizable online desktop with folder collaboration.
typetalk.com — Share and discuss ideas with your team through instant messaging on the web or on your mobile
Tugboat - Preview every pull request, automated and on-demand. Free for all, complimentary Nano tier for non-profits.
whereby.com — One click video conversations, for free (formerly known as appear.in)
vadoo.tv — Video hosting and marketing made simple. Upload videos with a single click. Record, manage, share & more. Free tier provides upto 10 videos, 1 GB storage, 10 GB bandwidth/month
vspace — Free links manager with private/public spaces, includes slack and google docs integration and chrome plugin.
userforge.com - Interconnected online personas, user stories and context mapping. Helps keep design and dev in sync, free for up to 3 personas and 2 collaborators.
wistia.com — Video hosting with viewer analytics, HD video delivery and marketing tools to help understand your visitors, 25 videos and Wistia branded player
wormhol.org — Straightforward file sharing service. Share unlimited files up to 5GB to as many peers as you want.
zoom.us — Secure Video and Web conferencing, add-ons available. Free limited to 40 minutes
shtab.app - Project management service that makes collaboration in the office and remotely transparent with tracker based on AI.
Zulip — Real-time chat with unique email-like threading model. Free plan includes 10,000 messages of search history and File storage up to 5 GB. also it provides self-hostable open-source version.
Automate.io - Simple and complex automation workflow tool with over 200+ app integrations. 300 monthly actions and 5 bots are free
robocorp.com - Open-source stack for powering Automation Ops. Try out Cloud features and implement simple automations for free. Robot work 240 min/month, 10 Assistant runs, Storage of 100 MB.
Fleep.io — Fleep an alternative to Slack. It has a free plan for small teams with full message history, unlimited 1:1 conversations, 1 group conversation and 1 GB file storage.
Chanty.com — Chanty is another alternative to Slack. It has a free forever plan for small teams (up to 10) with unlimited public and private conversations, searchable history, unlimited 1:1 audio calls, unlimited voice messages, 10 integrations and 20 GB storage per team.
ruttl.com — The best all-in-one feedback tool to collect digital feedback and review websites, PDF's and images.
