Plexo→
Beta — self-host nowThe brain.
The intelligence layer that powers every Joeybuilt product. Agents that remember, learn, and act across your entire digital life. Plexo doesn't just connect your apps — it thinks for them.
The platform
Plexo is the infrastructure.
An AI agent platform with a semantic context lattice for domain reasoning, vector-backed memory that persists across sessions, routing chains that pick the right model for the right task, and an extension system that lets agents gain new capabilities at runtime. Every Joeybuilt product runs on Plexo. Not beside it — on it.
Semantic Memory
Vector-indexed, session-persistent, cross-product. Your agent remembers what worked three weeks ago and applies it today. No re-prompting. No context windows as a crutch.
SCL — Domain Reasoning
The Semantic Context Lattice maps concepts, relationships, and regions in your domain. Plexo doesn't pattern-match against prompts. It reasons over structured knowledge.
Persistent Agents
Long-running, stateful, with tool access and channel presence. These agents don't answer questions and disappear. They hold context, execute multi-step workflows, and do the actual work.
The stack
Build, write, deploy.
Plexo handles intelligence. Koforje is where you write the code. Pushd gets it running. Three tools, purpose-built, no overlap.
Koforje
Spec complete, build imminentThe AI-native IDE.
LSP-native, agent-capable, built for the way software is actually written now. Your agents live where your code lives. Co-creation between you and AI, not bolted-on autocomplete.
Pushd
Architecture completeAI-native deployment.
From code to production with agents that understand your infrastructure. Plexo-optional — AI features activate when connected. Built for the teams that want deployment to think.
Built on Plexo
Four products. Shared intelligence.
Finance, documents, knowledge, productivity. Each one runs onPlexo's memory and reasoning. When Fylo learns your spending patterns, that context is available to Levio when it schedules your week. Same brain, different problems.
Fylo→
Early accessPredictive personal finance.
Connects your accounts, understands your patterns, predicts your future. Intelligent recurring transaction detection, merchant enrichment, AI categorization.
Fonto
In developmentEverything flows here.
Document and digital asset management — the intake layer. Receipts flow to Fylo. Knowledge flows to Nexalog. Action items flow to Plexo.
Nexalog
In developmentYour second brain, with a backbone.
Personal knowledge management built for how you actually think — not how note apps want you to think. All intelligence powered by Plexo.
Levio→
In developmentEmail, tasks, and calendar — unified.
Gmail and Outlook sync, AI scheduling, intelligent task management. Built to do what the current generation of productivity tools can't: think.
Real software.
Open source.
Plexo is self-hostable and running in production today. The code is on GitHub. Read it, run it, extend it.
Built by Dustin Olenslager. Named for Joe “Joey” Ipson.