An independent software company 3 live · 1 beta

SopenTransformers is the family behind four product companies — everyday tools and games, open artificial intelligence, unified model routing and passwordless authentication — all designed, engineered and run by one stubborn little team.

Explore our companies Our story
4 companies · 35+ products · 1 family Scroll

01 — Who we are

A small company with a giant appetite for building.

SopenTransformers is an independent software company built on a simple conviction: great products come from small teams that care. We design, engineer and operate our own family of digital companies — each with its own product, its own personality and the same obsessive standard of craft.

Our work spans the entire modern stack. We train and serve open artificial intelligence at SopenModel, connect every model through one clean interface at SopenRoute, make passwordless sign-in effortless at SopenXo, and ship a whole universe of everyday tools, utilities and games under the PosterMessage banner. Four companies, one family — and every one of them built to last.

We answer to no investors and no committees. Every product we make answers to one thing only: the people who use it. That independence is why our software feels the way it does — fast, honest and a little bit stubborn about quality.

“We don’t chase trends. We build things we’re proud to sign our names to.”
00Product companies
0Projects & counting
0Independently built
0Always shipping

A short manifesto

Software got loud. Bloated dashboards, endless pop-ups, products that demand your email before they show you anything. We build the opposite — small, fast, honest tools that respect your time, your data and your attention. No noise, no lock-in, no asking twice. Just things that work, made by people who use them every day.

02 — Our companies

Four products. One family.

Each company lives on its own domain, with its own product and its own personality — and the same signature: fast, honest software, crafted to last and free at the core. The index is the map. The chapters are the tour.

  1. 01PosterMessageTools for the AI erapostermessage.freebuff.app
  2. 02SopenModelOpen intelligence, every sizesopenmodel.duckdns.org
  3. 03SopenRouteEvery model, one doorsopen.freebuff.page
  4. 04SopenXoSign in without passwordsxo.freebuff.app
Live
35+ products & games in the suite

N°01 — The workshop

PosterMessage

Tools for the AI era.

Every family has a workshop — ours is PosterMessage. It is where most of our shipping happens: a growing suite of 35+ products spanning AI tools, developer utilities, creative apps, everyday helpers, games and even its own mini cloud. Each tool is engineered to do one job brilliantly — open fast, stay out of your way and never nag you to upgrade. It is software made by developers, for developers, and free at its core.

  • 35+ tools, apps and games under one roof
  • One design language across the whole suite
  • Free at its core — no paywalls on the essentials

Made for builders, tinkerers and teams who ship.

Visit PosterMessage
Live
5 model families — text, image, video, audio, web

N°02 — The open mind

SopenModel

A more open kind of intelligence.

SopenModel is our artificial-intelligence company, built on a simple belief: intelligence works best when it is open. The lineup spans five families — text, image, video, audio and web-browsing — in sizes from featherweight Mini to deep Ultra, so there is a model for every task and every budget. Free spaces give everyone a place to experiment, and selected models are published openly on Hugging Face for anyone to inspect, fork and build upon. Intelligence that keeps people in the picture.

  • Five model families — text, image, video, audio, web
  • From featherweight Mini to deep Ultra
  • Free spaces for everyone; open weights on Hugging Face

Made for the curious — from first prompt to production.

Visit SopenModel
Live
1 account for every model you’ll ever use

N°03 — The switchboard

SopenRoute

One simple interface for every model.

Modern AI means choice — far too much of it. SopenRoute is our answer: one clean door in front of every model. Sign in once and you get chats, API keys and saved history in a single account, with free access to every model and module. Bring the providers you already trust, or leave them at the door — either way, you stop juggling tabs, tokens and billing pages. One account, one interface, every model.

  • Every model behind one clean door
  • One account — chats, API keys & saved history
  • Free access to every model and module

Made for anyone tired of juggling tabs, tokens and keys.

Visit SopenRoute
Beta — free
0 passwords — nothing to phish, nothing to breach

N°04 — The gatekeeper

SopenXo

Authentication, minus the pain.

SopenXo is our security company, and it has one obsession: retiring the password. Sign-in becomes a single key per application and a six-digit code sent to your inbox — expiring in fifteen minutes, verified server-side, impossible to reuse. There is no password database to breach, no “reset link” theatre and nothing for attackers to phish. The boring, essential part of your stack, done beautifully — free while in beta.

  • Zero passwords — nothing to phish, nothing to breach
  • Six-digit codes that expire in fifteen minutes
  • Server-side verification on every sign-in

Made for developers who’d rather build than babysit logins.

Visit SopenXo

At a glance

The whole family in one table — what each company does, who it is for and what it costs. Nothing hidden.

The four companies compared — focus, best for, status and price
Company What it does Best for Status Price
PosterMessage Tools for the AI era — 35+ apps, utilities and games Builders, tinkerers and teams who ship Live Free at its core
SopenModel Open intelligence in five families — text, image, video, audio, web The curious — from first prompt to production Live Free spaces
SopenRoute Every model behind one clean door Anyone tired of juggling tabs, tokens and keys Live Free access
SopenXo Sign-in without passwords — one key, one six-digit code Developers who’d rather build than babysit logins Beta Free in beta

The family system

Four doors, one standard.

Each company lives on its own domain with its own personality — and they all share one design language, one account philosophy and one stubborn standard of craft. Here is how the family fits together.

N°01 — The workshop

PosterMessage

Where the family ships.

A growing suite of 35+ tools, utilities and games — each engineered to do one job brilliantly and stay out of your way.

35+ products & games

N°02 — The open mind

SopenModel

Intelligence, opened up.

Five families of open models — text, image, video, audio and web — sized from featherweight Mini to deep Ultra.

5 model families

N°03 — The switchboard

SopenRoute

One clean door.

Every model behind a single interface — including the ones we make ourselves — with one account for chats, keys and history.

1 account, every model

N°04 — The gatekeeper

SopenXo

The password dies here.

Passwordless sign-in for the family: one key per application, one six-digit code, zero passwords to phish or breach.

0 passwords

One family

One design language

Typography, motion and detail behave the same way everywhere you meet us.

One account philosophy

Sign in once, keep your history — and never meet a password again.

One standard of craft

Fast, honest and free at the core — or it does not ship. No exceptions.

03 — Projects

Everything we’ve shipped.

All the projects of all four companies — tools, models, modules and games — collected on one page and stripped of links. Just the index: what exists, what it does, who built it.

0projects indexed · 4 companies · 0 links

Showing all 56

01AI tool

PromptLab

Playground for quick prompt tests against any model.

PosterMessage
02AI tool

Draftly

Writing assistant for everyday docs and notes.

PosterMessage
03AI tool

SnapCaption

Automatic image captions in one click.

PosterMessage
04AI tool

Summara

Long-text summariser that keeps the point.

PosterMessage
05AI tool

TranslateNow

Instant translation in a side panel.

PosterMessage
06Developer utility

JSON Bakery

Format, validate and minify JSON.

PosterMessage
07Developer utility

Regex Garden

Build and test regular expressions visually.

PosterMessage
08Developer utility

Cron Whisperer

Read and write cron schedules in plain words.

PosterMessage
09Developer utility

DiffDuo

Side-by-side text comparison.

PosterMessage
10Developer utility

Base64 Lab

Encode and decode in one click.

PosterMessage
11Developer utility

UUID Workshop

Generate every kind of unique id.

PosterMessage
12Developer utility

HTTPer

Lightweight HTTP request console.

PosterMessage
13Developer utility

Hash Bench

Checksums and hash comparisons.

PosterMessage
14Developer utility

SQL Sprout

Run, format and prettify queries.

PosterMessage
15Developer utility

Env Vault

Keep local .env files tidy and safe.

PosterMessage
16Developer utility

Commit Canvas

Write and preview commit messages.

PosterMessage
17Creative

ColorForge

Palettes from any seed color.

PosterMessage
18Creative

TypePlay

Type specimen playground for the curious.

PosterMessage
19Creative

Pixel Anvil

Compress and resize images locally.

PosterMessage
20Creative

SVG Smith

Clean and optimise SVGs.

PosterMessage
21Creative

Wave Forge

Trim and convert audio in the browser.

PosterMessage
22Creative

Mockup Mill

Frame screenshots in seconds.

PosterMessage
23Creative

Icon Kiln

Build icon sets from simple strokes.

PosterMessage
24Everyday

Clip Stack

Clipboard history that actually sticks.

PosterMessage
25Everyday

Unit Switch

Units, currencies and quick math.

PosterMessage
26Everyday

QR Kiln

QR codes for links, text and Wi-Fi.

PosterMessage
27Everyday

Tempo Timer

Focus timer that respects deep work.

PosterMessage
28Everyday

Note Nook

Plain-text notes, no account required.

PosterMessage
29Everyday

File Finch

Convert documents between formats.

PosterMessage
30Everyday

Dice & Decide

Random picker for honest decisions.

PosterMessage
31Game

Snake Circuit

The classic, neon edition.

PosterMessage
32Game

Merge Dock

2048-style dock puzzle.

PosterMessage
33Game

Word Wire

Daily word guessing, no ads.

PosterMessage
34Game

Block Harbor

Falling-block puzzle with a calm mode.

PosterMessage
35Game

Orbit Dodge

Endless orbital reflex game.

PosterMessage
36Game

Card Alley

Single-deck solitaire.

PosterMessage
37Game

Mine Meadow

Minesweeper in the grass.

PosterMessage
38Cloud

DropNest

Share files without signing up.

PosterMessage
39Cloud

Paste Vault

Encrypted paste bin for teams.

PosterMessage
40Cloud

Ping Board

Uptime board for side projects.

PosterMessage
41Model family

SopenText

Text intelligence from featherweight Mini to deep Ultra.

SopenModel
42Model family

SopenVision

Image understanding and generation.

SopenModel
43Model family

SopenMotion

Video models for the patient and the impatient.

SopenModel
44Model family

SopenVoice

Speech and audio, in and out.

SopenModel
45Model family

SopenBrowse

Web-browsing models that do the digging.

SopenModel
46Open weights

Open Weights Library

Selected models published openly on Hugging Face.

SopenModel
47Platform

Free Spaces

Free rooms where anyone can experiment.

SopenModel
48Module

Route Chat

One clean chat for every model.

SopenRoute
49Module

Route Keys

API keys issued and revoked in one place.

SopenRoute
50Module

Route Memory

Saved history that follows your account.

SopenRoute
51Module

Route Bridge

Bring the providers you already trust.

SopenRoute
52Module

Route Console

Usage, billing and settings behind one door.

SopenRoute
53Sign-in

Xo Key

One key per application, nothing to remember.

SopenXo
54Sign-in

Xo Code

Six-digit inbox codes that expire in fifteen minutes.

SopenXo
55SDK

Xo Verify

Server-side verification on every sign-in.

SopenXo
56Widget

Xo Gate

Passwordless sign-in widget you can drop anywhere.

SopenXo

04 — What we believe

Built differently, on purpose.

Four companies, one code. These are the rules every SopenTransformers product lives by — no exceptions, no fine print.

01

Independence

No investors, no committees, no shortcuts. Every product answers only to the people who use it — and to us, the people who build it.

02

Craft

Typography, speed, the feel of every click. We sweat the details most teams skip, because details are what people remember.

03

Honesty

No dark patterns, no noise, no tricks. Our products do what they say and say what they do. When we say free, we mean free.

04

Momentum

We ship early, listen hard and refine forever. Standing still is the only failure we recognise.

05 — How we work

From spark to shipped.

No mystery, no magic dust. Just a way of working we have refined across every product we run.

01.

Notice

Every product starts with a frustration we know firsthand: too many logins, too many providers, intelligence behind glass walls. We build the things we wish already existed.

02.

Design

The smallest thing that solves the problem — nothing more. We sketch, argue and cut until only the essential remains, then make that essential beautiful.

03.

Build

Engineered in-house, end to end. Clean code, quick loads and interfaces that feel obvious from the very first second.

04.

Ship & refine

Launch is the starting line. We read every message, fix what annoys, polish what delights — and keep the product alive for years, not weeks.

06 — The story so far

From one spark to a family.

No press-release history, no founding myths — just the honest version of how four companies grew out of one stubborn habit: building.

Ch.01

The first spark

It started with one small tool, built over a weekend to fix one small annoyance. It worked, people stayed, and the workshop never stopped shipping — thirty-five products later, PosterMessage is still the beating heart of the family.

PosterMessage
Ch.02

An open mind

We kept meeting intelligence behind glass walls — impressive, expensive, closed. So we built our own: a lineup of open models sized for every task, from featherweight Mini to deep Ultra, with free spaces for anyone curious enough to knock.

SopenModel
Ch.03

One clean door

Every new model brought a new tab, a new key and a new bill. The fix was obvious — nobody had made it simple enough, so we did: one account, one interface, every model behind a single clean door.

SopenRoute
Ch.04

The password dies

Every product we run needs sign-in, and every sign-in needed a password — until ours didn’t. SopenXo turned authentication into a one-key, six-digit, zero-password habit: free while in beta, ruthless about simplicity forever.

SopenXo
Ch.05

Today — one family

Four companies later, the conviction hasn’t changed: small teams that care beat big teams that don’t. We keep building, keep answering every message ourselves, and keep the whole family fast, honest and free at the core.

The family

07 — Questions & answers

Everything people ask.

Straight answers, no fine print. Something else on your mind? Reach us through any of our products — a human always reads the messages.

SopenTransformers is an independent software company — a family of product companies rather than a single app. PosterMessage, SopenModel, SopenRoute and SopenXo each run on their own domain with their own focus, all built and operated by the same team.

Most of them, yes — and proudly so. PosterMessage keeps its essentials free, SopenModel offers free spaces, SopenRoute gives free access to every model, and SopenXo is free while in beta. Each product’s site has the exact details.

A small, stubborn team of engineers and designers. We write the code, draw the interfaces, run the servers and answer the messages ourselves — no outsourcing, no committees.

Every company carries the family name — Sopen — except PosterMessage, the workshop where it all started. And the Xo? That is simply what passwordless sign-in deserves: short, friendly and gone in a keystroke.

Yes — everything is built to be used, not just admired. Commercial use is welcome across the family, and each product’s own site carries the exact terms, written in plain language.

No. You can browse PosterMessage’s tools or try a game without signing in. SopenRoute and SopenXo use one simple account — and SopenXo never asks for a password at all, just a six-digit code sent to your inbox.

We are always happy to hear from builders, creators and curious people. The fastest way to reach us is through any of our products — pick a door below and knock.