Maps global security events, conflicts, and military activities in real time on an interactive OSINT dashboard.

https://github.com/unicodeveloper/globalthreatmap https://x.com/tom_doerr/status/2080947778126016708

Detects public and local IP addresses, maps upstream network topology, and checks for DNS leaks.

https://github.com/jason5ng32/MyIP https://x.com/tom_doerr/status/2081070215727612273

Charts penetration testing workflows covering databases, web applications, IoT, and wireless networks.

https://github.com/5bhuv4n35h/pentestmindmap https://x.com/tom_doerr/status/2081172363333243254

Reflect is an open-source system for Claude Code that learns from your corrections and remembers them permanently so you never have to repeat yourself.

https://github.com/haddock-development/claude-reflect-system https://x.com/tom_doerr/status/2081241498478113176

Curates resources for stock trading, aggregating tools for research, analysis, screening, charting, backtesting, and portfolio tracking.

https://github.com/shi-rudo/awesome-stock-trading https://x.com/tom_doerr/status/2081327384360358209

A Verizon Unlimited Ultimate plan for a family of four costs $200 a month. To text your kids.

Verizon Unlimited Welcome: $65 for one line.
Verizon Unlimited Plus: $80 for one line.
Verizon Unlimited Ultimate: $90 for one line.

A family of four pays $100 to $200 every month for the right to send a text message.

That is $1,200 to $2,400 a year. For 30 years, that is $36,000 to $72,000 to talk to your own family.

Then Hurricane Helene made landfall in September 2024. Cell towers went down in 11 counties in western North Carolina. The FCC reported nearly 50 percent of the state's mobile services were down. Over 150,000 people were cut off from the emergency communication ecosystem.

Verizon and AT&T projected weeks to restore full service.

You are subscribing to communication in 2026. And you lose it the moment the tower goes down.

Now meet Meshtastic.

A free and open source alternative to your carrier.

Created in early 2020 by a California engineer named Kevin Hester. Former Apple and Google engineer. Paraglider. Ham radio operator, callsign KI6GII. He wanted a way to text his friends when he flew into the backcountry with no cell signal. So he open sourced the whole radio stack.

Six years later the repo has 7,976 stars, 2,567 forks, and 450 contributors. GPL-3.0.

Here is what Meshtastic gives you:

- Long-range LoRa radio mesh, no cell tower needed
- Text messaging up to several miles apart
- GPS location sharing on your own map
- End-to-end encryption on every channel
- Store-and-forward when nodes drop offline
- Runs on solar, an 18650 cell, or USB
- Native Android, iOS, and web apps
- No SIM, no account, no monthly bill
- FCC Part 15 legal in the US, no license needed

A Heltec V3 board runs $18 to $30. A LILYGO T-Beam runs $35 to $55. That is your entire hardware bill. Forever.

Verizon needs a cell tower. Meshtastic does not.
Verizon needs your monthly $200. Meshtastic does not.
Verizon goes dark when the grid fails. Meshtastic does not.
Verizon logs who you texted, when, and where for 90 days. Meshtastic does not.

Here is the wildest part:

When Hurricane Helene destroyed the cell network in 2024, Meshtastic nodes stayed on. Communities that had pre-deployed the mesh coordinated welfare checks, road closures, and mutual aid while carriers were still repairing towers.

Flash a Heltec V3 in your Chrome browser. Pair it with your phone over Bluetooth. Text your neighbors five miles away. No SIM. No account. No cloud.

Your messages. Your network. Your hardware.

For a family of four, you save $2,400 a year vs Verizon Ultimate.
For a 30-node community mesh, the buildout is under $900 one time. Forever.

100% Open Source. (Link in the comments)

IMSI-catcher uses an SDR receiver to instantly identify the IMSI numbers, brands, and operators of cellphones around you without manually decoding raw GSM traffic.

https://github.com/Oros42/IMSI-catcher https://x.com/tom_doerr/status/2081379346472726764