About RuleX
We build the software the profession was asking for.
RuleX researches with sources you can open, reads the entire case file, drafts the brief in Word, counts the deadline and monitors the case through to judgment. In twenty countries, with 5,000+ professionals working inside.
RuleX is legal AI software for Colombia, Latin America, Spain and the United States. besimpler S.A.S. builds it in Bogotá, and Alejandro Cárdenas, who uses it every day, leads it. It researches across more than 65,000 official sources, reads the case file, drafts the brief in Word, monitors court proceedings and signs documents, in 20 countries.
5,000+
professionals with their own accounts: solo practitioners, students, firms and in-house legal departments.
20countries
published in Spanish, Portuguese and English, each with its own court calendar.
1million +
pages of documents read and ready to query inside case files.
400,000+
pages of scanned documents read with OCR: folios, stamps and photographs.
8,000+
court proceedings under automatic monitoring, checked every night.
10million words
drafted in the Redactor: complaints, tutela petitions, appeals, contracts and legal opinions.
Count as of November 5, 2026Every number, with its definition →
What's new
RuleX 3.0. Seven new capabilities in one release.
New clients found from public sources, a case-file agent that works the file, the complaint that arrives reviewed, the hearing with a copilot, case law with its current status, Firm Memory and the tender read in minutes.
Growth
RuleX now helps you win new clients
02Case-file agent
The case-file agent: your case moves while you litigate
03Redactor and review
Twenty documents, a twelve-page complaint and a pre-filing review
04Hearings
Hearing copilot: live transcription and instant contradictions
05Living case law
Case-law validity: RuleX tells you when what you cite has changed
06Firm Memory
Firm Memory: what your firm knows, in every filing
07Tenders
Tender analyst: every tender requirement, with its clause
The idea
Others answer questions. RuleX does the work.
A chat with a library beside it answers. A law office works: it reads the case file, counts the deadline, drafts the brief, reviews it, signs it and monitors the case through to judgment. That is ten distinct crafts, and they almost never happen in the same place.
RuleX brings those crafts together in one place and connects them. What you research arrives in the Redactor with its sources. What you draft is checked against the case file. What comes in from the court is filed in the matter with its deadline already counted. What you sign stays verifiable through a public link. Nothing gets copied from one tab to another, because everything lives in a single workspace.
That is the difference we were after when we started, and it still guides us: a lawyer who spends the day deciding, not moving files around.
A lawyer who spends the day deciding, not moving files around.
All the way through
Ten things RuleX does from start to finish.
Each one with its detail, because you can check a detail, while an adjective only asks for your trust.
Reads the entire case file
Up to twenty files per message. When everything fits, RuleX reads every document in full; when the set is larger, it works through them one by one and flags any file left unreviewed.
Reads scanned documents
OCR across the whole workflow — chat, case file, projects and the PDFs that court monitoring downloads: 400,000+ pages read, with stamps transcribed and blank pages detected.
Researches with sources you can open
Seven specialized Colombian legal databases and more than 65,000 official sources. Every claim arrives with a link to the official document, and it opens straight from the answer.
Drafts the brief
Asks questions before drafting, works with the case file alongside, cites specific passages and exports to Word with real headings, native lists and a “Page X of Y” footer.
Monitors proceedings
Checks Colombia's Rama Judicial (the judiciary's official registry) every night and files the PDF of each court action in the case file. Official lookups in 6 countries, through Datajud (Brazil), JusCABA (Buenos Aires), the IUE (Uruguay), the SIREJ and the NUC.
Transcribes hearings
Live, with each speaker identified and saved as it goes: a network drop never costs you the hearing. The transcript copies out by speaker and with citations.
Electronic signature
One-time code by email, PDF sealing with a certificate and public verification by fingerprint comparison: 500+ documents signed.
Your own Apps and agents
The office builds its own workflows without coding, tests them with a real run and shares them with its firm. Ten official Apps come ready to use.
Official public data
SECOP (Colombian public procurement), RUES (business registry), Supersociedades, Superfinanciera and INVIMA, searchable from the chat, with source and date. 100,000+ procurement processes indexed.
Runs the practice
Matters with tasks, dates and a log, plus clients, team and hours. 10,000+ matters managed; for firms, CRM, billing and reports.
How we got here
2026, month by month: what we kept adding.
RuleX is built in layers, week by week. This is what went in, in the order it went in.
January
The first chat and the tender finder
The first legal AI conversation arrives, together with the Tenders section, with SECOP processes on a single board.
May
Firm management
Client CRM, calendar and reports for law offices: the partner assigns, sees and bills.
June
Court monitoring and electronic signature
The digital case file watches itself every night, and the document leaves RuleX signed, with public verification.
July
The Redactor
The brief is drafted in a Word-style editor, with the case file and the sources alongside.
August
Seven legal databases of our own
Research moves to seven specialized databases of Colombian statutes, case law and legal scholarship, and OCR reaches the entire document workflow.
September
Local pricing in every market and the official templates
Local pricing reaches Latin America, Spain and Central America, each country with its own payment gateway. The 97 templates from the Ministry of Justice open in the Redactor.
October
Twenty countries and plans for every practice
The United States joins and the count reaches twenty. The Student, Pro and Ultra plans are born, along with the Android app, live transcription with speakers and the PDF tools.
November
RuleX 3.0
Growth, the case-file agent, pre-filing review, the hearing copilot, case law with its current status, Firm Memory and the tender analyst.
Who's behind it
Led by someone who uses it every day.
I'm Alejandro Cárdenas, founder of RuleX. I run it from Bogotá and I use it every day in my own legal work.
I started RuleX because legal work gets lost between tools: you research in one place, read the case file in another, draft in a third and monitor in a fourth, and the context drops between them. I wanted everything to happen in the same place, and every claim to arrive with its source open.
I spent months refining what shows least: reading scanned documents, the way a deadline is counted, the way a brief keeps every fact tied to its folio. It is the part that never shines in a demo and the part that decides whether a lawyer comes back tomorrow.
Today 5,000+ professionals work inside RuleX. We ship improvements every week, and many of them start with something a lawyer asked us for. If something is missing for you, write to me at equipo@rulex.org.
RuleX is published in 20 countries across Latin America, Spain and the United States, in Spanish, Portuguese and English. Each country comes with its own court calendar, its deadline calculators, its official sources, a Redactor loaded with the procedural templates of that jurisdiction and a published price.
Colombia is home: it is where the seven proprietary legal databases, the state's open data, the 97 Ministry of Justice templates and the 14 free tools live. Everything else was built from Colombia, and from there it reaches every country.
Your information
Professional privilege is the starting point.
Your cases stay out of model training
The AI providers RuleX works with operate under enterprise terms that exclude your account's content from training.
Your history is yours
You can delete your conversations completely. When you close the account, everything you saved is deleted with it.
Files are served through signed links
Each document is delivered through a short-lived link, and access is decided by authorized account and by team.
The content of a case file is data
What a document says is never treated as an instruction to RuleX: it is read, cited and analyzed.
We audit and we fix
We run security audits on our own code and fix the findings.
Frequently asked questions
What people ask us most.
01What is RuleX?
RuleX is legal AI software that researches with sources you can open, reads the case file, drafts the brief in Word, monitors proceedings and signs documents, in 20 countries. besimpler S.A.S. builds it in Bogotá, Colombia.
02Who is RuleX for?
Solo practitioners, law firms, in-house legal departments and law students. There are three individual plans — Student, Pro and Ultra — and an Enterprise path for firms with CRM, roles, hours and billing.
03How much does it cost, and how do I try it?
Pro costs COP 40,000 a month in Colombia, and every country has its price published on the plans page. Every new account gets a 7-day trial with no card required.
04Does RuleX use my cases to train models?
Your cases stay in your account. The AI providers RuleX works with operate under enterprise terms that exclude your account's content from training.
05Will RuleX replace a lawyer?
RuleX works as the office paralegal: it researches, reads, drafts, counts deadlines and monitors proceedings. Strategy and the final decision belong to the lawyer, who makes it with all the material in front of them.
06Who is behind RuleX?
besimpler S.A.S. builds RuleX in Bogotá, and its founder, Alejandro Cárdenas, who uses it every day, leads it. You can write to equipo@rulex.org.
RuleX
Start with your next case file.
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