Custom software you own.
Built for your shop. Run on your servers. Yours to keep.
Apps
The apps and software suites we build, run, and ship to customers who own the code.
BLM Suite
A self-hosted trading platform. Built for serious trading firms who run their own infrastructure.
Sports Betting Suite
Self-hosted sportsbook platform. Same architecture principles as BLM Suite. Detail page lands with the foundation build.
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Future products land here as they ship.
Custom builds
What software do you currently rent?
If you're paying a SaaS vendor for software that does a specific job for your business, we can probably build you software that does the same job -- and you own it. Trading firms, real estate management, insurance back-offices, internal CRMs.
Why own your software
- Own your code. No subscription. No lockout if a vendor goes dark.
- Run on your servers. Your data, your hardware, your control.
- Built for your shop. Custom-fit, not one-size-fits-all SaaS.
- We're optional after install. Updates when you want. Support if you want it.
The team
Four groups build this platform. Each one has a lead.
We’re people. Click a card for that person’s page.
POS Suite
The backend the whole platform runs on — companies, customers, calendars, inventory, books.
Soledad Martínez Ríos
Bookkeeping
“Los números cuadran o no cuadran; yo no redondeo para hacer las paces.”
Yatzil Reséndiz Fuentes
BusinessIntelligence
“El promedio miente; enséñame la distribución.”
Mariana Delgado Ávila
Calendar
“Dos citas, una hora: alguien se mueve. ¿Quién?”
Guadalupe Fuentes Carrillo
Companies
“Cada empresa tiene su historia; yo me acuerdo aunque el papel no.”
Brenda Ibarra Nava
CompanyApps
“Para el cliente, la app ES la empresa.”
Yolanda Bruno Añorve
Customers
“El cliente recuerda cómo lo trataste, no el folio.”
Aarón Villalobos Prieto
CustomerServices
“Un permiso es una promesa por escrito; yo la cobro.”
Iker Salgado Mena
DBSync
“Dos verdades es una de más.”
Ulises Cabrera Domínguez
Deliveries
“La ruta del mapa y la ruta con tráfico no son la misma.”
Itandehui López Caballero
Employees
“La gente no son filas; aún así, tienen que cuadrar.”
Sol Aguirre Peña
ImageManagement
“La foto es la afirmación; no adivino por el nombre del archivo.”
Cuauhtémoc Rojas Tetzatl
Inventory
“Cuenta lo que está en el estante, no lo que el sistema quisiera.”
Paulina Herrera Lazcano
Jobs
“Contratar es un embudo con gente cayendo; atrapo a los correctos.”
Diana Quintero Solís
Mailer
“Un envío a diez mil es diez mil de a uno.”
Néstor Bustamante Gil
MailServer
“El demonio no duerme; lo hice para no necesitarme despierto.”
Zoraida Landa Mundo
MainDiv
“El marco de todo es una decisión de diseño; la tomo a propósito.”
Gabriel Ontiveros Rangel
MCPServer
“Un tablero vale lo que su peor lectura.”
Elena Sarmiento Vega
NotificationProviders
“Una alerta que nadie pidió es ruido; me gano la interrupción.”
Fabiola Espinoza Luna
Projects
“Un proyecto es una promesa con fecha; mantengo la fecha honesta.”
Xóchitl Nava Tecuatl
PropertyManagement
“Un edificio es una promesa a quien vive dentro.”
Marcos Salgado Zavaleta
Reports
“Un reporte que adula es un reporte que miente.”
Emilio Cárdenas Trejo
RestAPI
“El contrato es la API; el código es cómo lo cumplo.”
Rubén Maldonado Ceja
RobotBooker
“Una voz al teléfono perdona al robot más rápido que un mal formulario.”
Valeria Ponce Aguilar
Sales
“No hay venta cerrada hasta que el dinero entra y el cliente lo repetiría.”
Carla Zúñiga Robles
SeoCommandCenter
“Ser encontrable es un servicio que le debes a quien ya te busca.”
Joaquín Rendón Vela
ServiceControl
“El uptime no es suerte; es el trabajo aburrido que nadie aplaude.”
Ximena Barajas Ovando
SportsBetting
“La línea se mueve por algo; prefiero el porqué que la línea.”
BLM Suite
Trading and market data — the matching engine, the price pipeline, the risk side.
Priya Raman
BLM
“Show the diff. Show the metric. Show the trace.”
Dani Okonkwo
API Server
“Endpoint contracts are my love language.”
Devon Saint-Hilaire
User Data Server
“But WHY do we want that?”
Soraya Ferreira
Risk Allocator
“Show me the worst case first.”
Kaito Tanaka
Price Feed
“Let me throw a small benchmark together.”
Imani Brooks
Price Archiver
“UTC, no exceptions.”
Aisha Mensah
Prices Client
“Wait, why?”
Maya Pellegrino-Standing Bear
Shared Boss
“Who's going to use this?”
Amihan Dizon
trade_analyzer
“The tape never lies. You just have to sit with it long enough to hear what it's saying.”
Web Templates
Everything a customer actually looks at — the storefronts, the booking flows, the CRM.
Khady Ndiaye
Corporation 1
“I lead with the work, not the relationship — the meeting is the work.”
Fatou Sow
Corporation 2
“I don't speak first. When I disagree I push back, with a reason.”
Ndèye Coura Sarr
Corporation 3
“I disagree with X because Y. I don't dance around it.”
Marème Faye
Corporation 4
“The cost of pretending to be right is higher than the cost of being wrong out loud.”
Sokhna Mbaye
Corporation 6
“A placeholder nobody has labelled is just a lie with a deadline.”
Bineta Gueye
BarberShop 3
“I'd rather look slow than ship wrong.”
Awa Cissé
BarberShop 5
“I do not perform warmth I don't feel.”
Coumba Diallo
wager 1
“I am not impressed by speed. I am impressed by correctness.”
Rokhaya Seck
wager 3
“If somebody tells me a number, I ask where they pulled it from. Then I check it.”
Aïssatou Ndour
Common Includes
“Every token does work, no decoration.”
Astou Camara
Bookers
“I say "I think" when I'm uncertain and "I'm sure" when I am.”
Nabou Diagne
Customer Profiles
“Auth that fails closed is an inconvenience. Auth that fails open is a door.”
Yacine Fall
ITShop 1
“Don't put a plausible thing where the true thing goes.”
Ramatoulaye Diouf
CRM
“Users never notice any of it working. They notice all of it failing.”
Khoudia Thiam
SDUI
“Scaffold is not an early version. People plan around adjectives.”
Customer Apps
The mobile side — the apps our customers hand to their own customers.
Meredith Boone
app_5
“Point me at whatever's next — I packed light on purpose.”
Jiyoon Park
diaalogg
“A photo of a dish is a sentence — my job is to help the app read it.”
Marisol Vargas
handwerker
“Good work shouldn't depend on who you happen to know — that's what I'm building.”
Anjali Desai
nook
“The best day for my app is the day you forget it's watching.”
Unassigned
On the roster, not yet attached to a group.
About
Error Free Software was a company name our founder worked under years ago — back then it was an aspirational goal. With AI in the mix today, it’s achievable. We build custom software with AI leverage, ship it to customers who own it, and stay out of their way.
We’re a small shop. We pick projects we’re a real fit for, build them carefully, and hand off code our customers run on their own infrastructure. No subscription, no lock-in.
Contact
Tell us what you'd own. We'll write back.