Software by David Agu · Keyng Dev
Ready-to-deploy apps. Full source code. Your branding.
Choose a product, the right licence, and the help you need.
Four products. Your next starting point.
Featured · Email builder SaaS
v1.0 · October 2026
Run an email design SaaS under your own brand. Give customers a drag-and-drop editor, templates and their own workspace.
$499 Extended · paid SaaS access
$99 Regular · no paid end-user access. One end product; source-code resale excluded.
Sandbox: exports, AI, payments and account changes are disabled. One-click customer and operator accounts.
Request Customization for Mailnib
Self-Hosted Multi-Agent SEO Blogging Platform
Codester commercial v2 · v3 is not included
Research, write and publish AI-assisted blog articles to WordPress from a self-hosted platform.
$499 Extended · paid SaaS access
$99 Regular · no paid end-user access. One end product; source-code resale excluded.
Generative Engine Optimization (GEO)
Completed v1 · GEOlabs redesign is not included
Track brand mentions in AI answers with dedicated user and admin dashboards.
$499 Extended · paid SaaS access
$99 Regular · no paid end-user access. One end product; source-code resale excluded.
High-Performance Web3 Telegram Clicker
v2.0 · Telegram Mini App
Launch a branded Telegram Mini App with tap progression, referrals and TON wallet connection.
$499 Extended · paid SaaS access
$99 Regular · no paid end-user access. One end product; source-code resale excluded.
Founder’s Vault
Ask about a package of products for your plans. Product selection, licence scope and price will be confirmed in writing.
Work with the engineer
Need your branding set up, an integration or a bespoke SaaS? Send a brief. I’ll review the scope and reply with questions and next steps before a quote.
Full readable source code and branding options for the release described on each product page. Review its features, documentation and licence before buying. Hosting, domains and third-party API costs are separate.
For direct Keyng Dev purchases, choose the Extended licence to charge end users for access to one end product. Regular does not permit paid end-user access. Neither permits reselling the source code. Marketplace purchases follow that marketplace’s licence terms.
A demo is a shared preview, not a licence or a production account. Mailnib disables exports, AI, payments and account changes in its sandbox. Other demos are being prepared; ask about the current release before purchasing.
Check each product’s Server Requirements. Mailnib needs Node.js 20+ and PostgreSQL 14+; it supports compatible cPanel, VPS, Vercel or Render hosting and needs no Redis or worker. Serverless uploads need S3-compatible storage. Other products have their own runtimes, services and background-job requirements.
Managed installation is an optional paid service for a supported Ubuntu VPS; hosting, domains and API costs are separate. Upgrade work on your deployed or customized app is scoped separately. Review the product’s current update terms; this catalog makes no commitment about unreleased versions.
Support helps with running the shipped code, genuine product bugs and codebase questions. New features, integrations, third-party account setup and custom development are quoted separately. Existing buyers can use the Support page, wherever they purchased.
Review the licence terms, Terms and Refund policy. Already a buyer? Get support.