🇬🇧 Flask Chatbot 2.0 – Complete Professional Architecture (Commercial Version)

Description

Palks Studio – Flask Chatbot 2.0

(Flask + OpenAI optional + JSON knowledge base + Floating Widget + Persistent Memory)

A complete chatbot system designed for real projects — not for tutorials.

Version 2.0 combines:

• a robust Flask backend
• an advanced user interface
• a floating widget you can embed anywhere
• persistent memory powered by SQLite

Everything works fully offline by default, with OpenAI available as an optional upgrade.

Available on :

- Gumroad  

- Itch.io  

- Ko-fi

Three ways to use it

• Local mode (no OpenAI key required)
• OpenAI mode (GPT-3.5 / GPT-4) by adding a key in .env
• Production deployment (o2switch / Passenger*, shared hosting, VPS, Docker, Nginx…) Passenger support included; hosting configurations may require adjustments depending on the provider.

This is not a script. This is a professional architecture ready for websites, client work, educational platforms, or the foundation of a micro-SaaS.

What makes this template different

Most Flask chatbot templates are minimal demos with no real structure.

This one provides a realistic architecture, including:

• a clean backend
• a full UI
• a floating widget
• offline mode + OpenAI mode
• SQLite memory
• installation scripts
• multi-hosting deployment options
• professional documentation

It’s built for delivery, not just experimentation.

No mandatory external services

Everything works 100% offline:

• local JSON knowledge base
• local SQLite memory
• no external API calls unless you explicitly enable OpenAI

You stay fully independent.

Privacy & data control

Nothing is sent online unless you activate OpenAI. Local JSON + local SQLite = full control.

Core Features

• Fully working chatbot → python app.py
• Full web interface (/ui)
• Light / Dark mode
• Typing animation
• Browser-side message history
• Floating widget (HTML, WordPress, Webflow, custom sites…)
• Persistent memory (SQLite + automatic session handling)
• Two response modes:
  • Offline JSON
  • OpenAI GPT when enabled
• Installation scripts (Windows + Linux)
• Passenger + Docker support
• Clean & modular architecture

What’s inside the package

• app.py — Flask API
• main.py — response logic (JSON + OpenAI)
• storage.py — SQLite memory engine
• sample_data.json — offline editable knowledge base
• index.html — main interface
• widget.html, widget.js, widget.css — embeddable widget
• install.sh, install.bat — installation scripts
• passenger_wsgi.py — shared hosting / Passenger support
• Dockerfile, docker-compose.yml — Docker environment
• .env.example — OpenAI + memory config
• Full documentation:
  • README.md
  • INSTALL.md
  • CUSTOMISATION.md
• Professional license file

Who is this template for?

Perfect for:

• developers shipping chatbots to clients
• freelancers needing a clean, reusable base
• SaaS creators building an assistant or support bot
• educators, schools, bootcamps
• agencies adding automated assistants to websites
• therapists, coaches, consultants needing a private assistant
• personal projects wanting a real architecture to learn from

Version 1 vs Version 2

Version 1 includes:

• /chat API
• offline JSON mode + optional OpenAI
• minimal HTML interface

Version 2 adds:

• full /ui interface
• floating widget
• persistent memory (SQLite)
• Windows + Linux installation scripts
• Docker support
• ready-to-deploy structure for client work
• light/dark UI
• cleaner architecture and better scalability

In short

You download it. You run python app.py. The chatbot works instantly.

Then you can:

• customize the answers
• change the design
• enable OpenAI
• embed the widget anywhere
• deploy it locally, on shared hosting, or on a VPS

License

Personal + commercial usage allowed. Reselling or redistributing the template as-is is prohibited. © 2025 – Palks Studio