Our Software Portfolio

Explore our flagship SaaS products and custom development projects. Discover how we solve complex business challenges with clean, scalable PHP architecture.

Financial Software

Keystone Accounting Pro

The powerful, compliant, and scalable accounting solution built for modern enterprises. Strict IFRS adherence and SARS Tax Compliance built-in.

Strict MVC Architecture: Native PHP framework for rapid execution and scalable module management.
Dual-Environment Agility: Seamless execution on Windows (AMPPS) and Linux (cPanel).
Tamper Protection: ChristoDev Engine actively monitors core files, deploying immediate lockouts on bypass attempts.
Defensive Programming: SQL transactions (BEGIN, COMMIT, ROLLBACK) guarantee absolute database integrity.
IFRS Adherence: Core logic structured around International Financial Reporting Standards.
SARS Tax Compliance: Native support for 15% VAT, inclusive/exclusive pricing, and VAT extraction.
View Live Project
Financial Software

Keystone Accounting Lite

A comprehensive, self-hosted accounting solution engineered specifically for South African tax laws. Keystone handles everything from quoting and invoicing to complex inventory pipelines. 100% Free!

Strict 15% SARS VAT compliance & IFRS reporting
Live Sage Evolution database integrations using explicit QtyAvailable logic
Automated recurring billing and client portal generation
Professional Estimates: Create beautiful quotes and instantly convert them into invoices with a single click.
Recurring Billing: Set up automated recurring invoices (Weekly, Monthly, Quarterly, Annually) for retainers and subscriptions.
Income Projection: Visualize your future cash flow with the Projected Recurring Income chart.
Multi-Currency Support: Bill clients in their local currency while tracking your base revenue.
View Live Project
Financial Software

Keystone Business ERP

Enterprise-Grade Features, Unmatched Value! Engineered for security, compliance, and automated financial workflows.

Dynamic Quoting: One-click conversion from approved quotes directly to invoices.
Recurring Billing: Automated subscription management with advanced scheduling rules.
Credit Notes: Track and apply credit notes with integrated inventory return logic.
Credit Limit Enforcement: Assign specific credit limits to prevent customer over-exposure.
Real-Time Stock: Monitors precise QtyAvailable to prevent stock-outs.
Serial Management: Track high-value items through purchasing and sales lifecycles.
PO Workflows: Digitally receive stock into inventory, automatically updating average costs.
Service vs. Product: Smart categorization between physical stock, labor, and digital services.
View Live Project
Business Website

Con-Aid Website

CON-AID / CBR PLUS is an economical, long-term soil stabilization solution for road construction and rehabilitation. By transforming in-situ soil into a durable road layer, suitable for all weather conditions. The technology reduces construction costs and limits ongoing maintenance.

Progressive Web App
Tailwind CSS
MySQL Database
Vanilla PHP
Vanilla Javascript
View Live Project
Security

App License manager

Unbreakable Ecosystem
Secured by an advanced 3-Layer Tamper Protection system featuring live Database Logic Offloading and cryptographic domain binding.

Instant Activation: Request a 30-day trial or purchase a full license and receive your cryptographic key immediately. No waiting for manual approvals.
Self-Evolving Updates: An autonomous Over-The-Air (OTA) engine that safely applies source code patches and executes sequential database migrations automatically.
Developer News Feed: Stay informed. View detailed release notes, maintenance schedules, and critical security alerts directly within your client dashboard.
Instant Remote Kill Switches
Encrypted PDO Driver Injection
Self-Evolving OTA Updater
Automatic SQL Execution
Transaction Rollback on Failure
View Live Project
ERP System

PropLease Property Management

PropLease is the only property management ERP built exclusively for South Africa. Automate trust accounting, crush municipal tariffs, and guarantee PPRA compliance on autopilot.

Atomic Receipt Engine: One single receipt processes the invoice, credits the landlord, deducts agency commission, and calculates agent splits simultaneously.
Automated Wallet System: If a tenant overpays, the exact difference is stored in an unallocated trust wallet and automatically deducted from their next month's invoice.
Bank CSV Reconciliation: Import your bank statements to isolate unmatched Trust Account receipts and link them to tenant ledgers with one click.
Deposit Yield Engine: Manage RHA damage deposits safely as a Trust Liability until the lease ends, allowing for legal deductions before refunding.
SARS IT3(b) Tax Reports: Generate automated PDF tax certificates for landlords spanning the exact SA tax year (1 March - 28 Feb), detailing all income and deductible expenses.
View Live Project
App Icon

Install Christo Lochenberg Developments

Install the app for quick access.