Our products

Software we've built and still ship.

Opentoke operates its own products where we believe no one else is doing the work properly. HalaOS is our flagship — an open-source unified platform for HR, payroll, and tax.

H
HalaOS
halaos.com

Unified HR, payroll and tax — built for Southeast Asia and the US.

OPEN SOURCE IN PRODUCTION FLAGSHIP
The problem

Three systems, four spreadsheets, one very tired accountant.

Most SMEs and scale-ups across Southeast Asia and the US stitch their people operations together from a payroll tool that only knows one country, an HR tool that doesn't know tax, and a local accountant who files quarterly — if nothing goes wrong. It works until it doesn't.

Our answer

One system. Every jurisdiction you actually operate in.

HalaOS is a single platform that runs payroll, manages HR records, and files the right taxes in the right places. The core is open source so engineering teams can audit and self-host. The managed cloud exists for teams who'd rather not.

What's inside
01 / PAYROLL

Multi-country runs

Malaysia, Singapore, Indonesia, Philippines, Vietnam, Thailand, and US state-by-state. One payroll click, correctly computed for each employee's jurisdiction.

02 / STATUTORY

Contributions, built in

EPF, SOCSO, EIS, CPF, BPJS, SSS, PhilHealth, social security, FICA — computed and formatted to match what each agency actually expects.

03 / TAX

Filing & withholding

Monthly withholding, quarterly and year-end forms, W-2s, 1099s, EA forms, 1700s. Generated in the formats your revenue authority accepts.

04 / HR CORE

Records & lifecycle

Employee records, contracts, onboarding flows, leave and time-off policies, org charts. The boring stuff, done without ceremony.

05 / SELF-SERVICE

Employee portal

Payslips, tax forms, leave requests, personal info — so HR stops answering the same three questions every month.

06 / API

Everything is API-first

If you can see it in the UI you can script it. Webhooks for every lifecycle event. Integrates with accounting tools out of the box.

07 / OPEN SOURCE

Yours to audit

The core is licensed permissively. Self-host for compliance control or run on our managed cloud. Switching directions doesn't cost you your data.

08 / COMPLIANCE

Alerts that matter

Rate changes, filing deadlines, regulatory updates — surfaced in the product, not buried in a 40-page PDF.

09 / REPORTING

The numbers you'll actually read

Headcount cost, effective tax rate, jurisdiction breakdown. Export to the finance stack you already run.

Under the hood

Boring technology chosen on purpose.

FRONTEND
Next.js · React
TypeScript, Tailwind, Radix UI
BACKEND
Node · Rust
tRPC, Drizzle, calculation engines in Rust
DATABASE
PostgreSQL
Event-sourced payroll runs, full audit trail
INFRA
AWS · Cloudflare
Regional deployments for data residency
Availability

Two ways to run it. No lock-in either way.

SELF-HOSTED
Free · open source

Clone the repo. Run on your infrastructure. Own every row.

MANAGED CLOUD
From $8/employee

We run it. You use it. Filing, uptime, and support included.

Visit halaos.com Book a walkthrough

Client work, selected and anonymised.

FINTECH · 2025

Cross-border settlement engine

Redesigned a remittance platform's core ledger to handle three new currency corridors without doubling ops headcount.

UNDER NDA
LOGISTICS · 2025

Warehouse OS rebuild

Rewrote the inventory layer of a regional 3PL. Cut end-of-shift reconciliation from two hours to eight minutes.

UNDER NDA
HEALTHCARE · 2024

Clinic operations platform

Appointments, billing, and inventory for a growing clinic network. Designed to stay usable when the wifi wobbles.

UNDER NDA

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