Tools / difficult networks

27 source links attached

State your situation.

Twenty-seven open-source tools, organized by what the network is doing—not by product category alone.

Source attached

Chosen is not endorsed. Security changes; inspect current project guidance before trusting a tool with sensitive work.

Fast path / filter

What is the network doing?

Showing all 27 tools.

The catalog

Every tool keeps its limits visible.

Full catalog renders in HTML. The situation picker only narrows it.

01Offline / Mesh

Briar →

P2P encrypted messenger over Bluetooth/Wi-Fi — no servers, so there's nothing to shut down.

FIELD NOTE

Became a lifeline during Iran's January 2026 shutdown that cut off 85M+ people.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
02Offline / Mesh

Bitchat →

Bluetooth mesh chat — no internet, no SIM card needed.

FIELD NOTE

Downloads in Nepal jumped ~1,400% in five days during the Sept 2025 Gen-Z protests; Nepal briefly became its largest user base.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
03Offline / Mesh

Meshtastic →

Open-source LoRa long-range mesh network for off-grid text messaging on cheap radios.

WHEN IT MATTERS

Kilometres of range with no tower, no SIM, and no one to ask — off-grid by design.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
04Offline / Mesh

Bridgefy →

Bluetooth mesh messaging for when the internet disappears.

FIELD NOTE

Used during shutdowns in Hong Kong, Myanmar, and elsewhere.

LIMITS

Researchers found serious security flaws in earlier versions — prefer Briar for sensitive comms.

SOURCE ATTACHED
05Secure Messaging

Signal →

The gold-standard open-source end-to-end encrypted messenger.

FIELD NOTE

Its encryption protocol is so trusted that even WhatsApp runs on it.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
06Secure Messaging

Element / Matrix →

Decentralized, self-hostable encrypted chat rooms.

WHEN IT MATTERS

Self-hostable means no single company can switch your community off.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
07Secure Messaging

Delta Chat →

Encrypted messaging that travels over ordinary email servers.

WHEN IT MATTERS

It rides the email network — blocking it means blocking email itself.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
08Circumvention

Tor Browser →

Anonymous browsing; access blocked sites.

FIELD NOTE

Two decades of audits and daily use by journalists and readers of blocked news worldwide.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
09Circumvention

Snowflake →

Run a browser extension and become a proxy helping censored users reach Tor.

WHEN IT MATTERS

Your everyday browser tab can become someone else's way out — no technical skill required.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
10Circumvention

Psiphon →

Open-source VPN/proxy tunnel built to defeat filtering.

WHEN IT MATTERS

Purpose-built to defeat national-scale filtering, and battle-tested for years.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
11Circumvention

Ceno Browser →

P2P web browser that shares cached pages across users.

WHEN IT MATTERS

Pages you've already read travel peer-to-peer to people who can't reach them.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
12Evidence

Tella →

Camera app that encrypts and hides photos/videos.

WHEN IT MATTERS

Built for human-rights documentation — evidence stays hidden even if the phone is taken.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
13Evidence

ProofMode →

Guardian Project tool that adds cryptographic metadata to photos and videos.

WHEN IT MATTERS

Turns any phone photo into verifiable evidence — signed, timestamped, tamper-evident.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
14Evidence

eyeWitness to Atrocities →

Court-ready verified footage capture.

WHEN IT MATTERS

Designed with lawyers so footage stands up in court, not just on social media.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
15Monitoring

OONI Probe →

Run a test, contribute open data on what's blocked in your network.

WHEN IT MATTERS

Every test you run becomes public, citable evidence of censorship.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
16Monitoring

internetshutdowns.in →

India's live internet-shutdown tracker, maintained by SFLC.in.

FIELD NOTE

The tracker behind the headline — every Indian shutdown, logged and public.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
17Monitoring

NetBlocks →

Real-time global internet observatory.

FIELD NOTE

Often the first alert the world sees when a country goes dark.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
18Organizing

Ushahidi →

Open-source crowdsourced mapping and reporting.

FIELD NOTE

Born from crisis response — mapping what's really happening when official channels won't.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
19Organizing

Loomio →

Collaborative decision-making for groups.

WHEN IT MATTERS

Decisions made in the open by the whole group — not in someone's DMs.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
20Organizing

Decidim →

Participatory-democracy platform.

FIELD NOTE

Used by cities worldwide to put budgets and proposals in citizens' hands.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
21Organizing

Consul Democracy →

Citizen-participation platform — proposals, budgets, votes.

WHEN IT MATTERS

Democracy as software: propose, deliberate, vote — in public.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
22Organizing

CiviCRM →

CRM built for nonprofits and volunteer movements.

WHEN IT MATTERS

Contacts, campaigns, and donations — without handing your member list to Big Tech.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
23Organizing

Spoke →

Open-source peer-to-peer texting for mobilization.

WHEN IT MATTERS

One volunteer, one phone, thousands of real conversations.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
24Whistleblowing

SecureDrop →

Anonymous submission system for sources and journalists.

FIELD NOTE

Trusted by major newsrooms worldwide to protect their sources.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
25Whistleblowing

OnionShare →

Share files anonymously over Tor.

WHEN IT MATTERS

Files travel directly between people over Tor — no middleman ever holds a copy.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
26Whistleblowing

GlobaLeaks →

Self-hostable whistleblowing platform.

WHEN IT MATTERS

Any newsroom or watchdog can run its own secure leak inbox.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED
27Whistleblowing

Tails →

Amnesic live OS that leaves no trace on the computer.

WHEN IT MATTERS

Boot from a USB stick, shut down, and the computer forgets you were ever there.

LIMITS

No project-specific limit has been added to this catalog entry yet. Check the source documentation.

SOURCE ATTACHED

Take the file

Portable by default.

The repository and data packages can be copied now. A verified APK/ZIM bundle is not yet published.

Release package

Take the records. Keep the source.

Download the published datasets or clone the repository. Offline application bundles remain a visible distribution gap.

Practice

Tools are half the answer.

Start with a threat model. Keep project documentation close.

Corrections / additions

Know a better tool?

Open one issue with the source, the use case, and the limitation we should state.