Umbrella – an open source digital and physical security handbook

In plain words

Umbrella is an open source handbook covering digital and physical security practices. It provides guidance for individuals and organizations seeking to improve their security posture across both online and offline domains. The resource combines security information in an accessible format, making it suitable for users with varying levels of technical expertise who want practical security knowledge.

written from the facts on this page · September 2026

• UA
  Umbrella App – Digital and Physical Security Advice2015 · secfirst.org · ▲5
• 
  Information Security Handbook2016 · github.com · ▲31

  Contribute to davidbailey/Information_Security_Handbook development by creating an account on GitHub.

• 
  Air Umbrella2014 · kickstarter.com · ▲117

  Pressurized air to protect your head from rain (pre-launch)

• 
  Umbrella.chat2018 · ▲65

  Supports your employees against discrimination & harassment

• 
  Security Checklist2019 · securitycheckli.st · ▲203

  A checklist of resources for online privacy and security.

• 
  Umbrella Technologies2020 · umbrellasecurity.com · ▲1

  Security design that delivers

• 
  /dev/null▲490

  a social network for devs

  Dev tools · 3d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 28d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 26d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 23d ago · openbot.run

• 
  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 21d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 29d ago · corespeed.io

• 
  Spline▲1,191

  Design tool for 3D web experiences

  Work · 2020 · spline.design

• PP
  PSX Party – Online Multiplayer Playstation 1 Emulator Using WebRTC▲676

  Play classic 32-bit retro games online with friends! Free multiplayer emulator in your browser. No downloads required.

  Life & fun · 2020 · psxparty.kosmi.io

• A2
  After 2.5 years on my side project, it has hit £500/month revenue▲647

  It's been a long slow hog and I almost gave up a few times (more than a few) but when covid hit this year it gave me some time to really focus on my product. There were stupid user journey things that I knew needed fixed. There were some features I knew needed added. And I knew the pricing was wrong. I spent some hardcore time working on these things back in March / April and since then my MRR has continued to grow. My product is SongBox (https://songbox.rocks) - it's an alternative to things like bandcamp and soundcloud for creators who need to share audio files privately.…

  Commerce · 2020

• TW
  This website is valid JSON▲604

  Life & fun · 2020 · webdatarender.com

• 
  UserLeap▲590

  AI-powered, product research platform

  Growth · 2020 · sprig.com

• 
  Headlime 2.0▲568

  Professional marketing copy for anyone

  AI · 2020 · headlime.com