Tools
Free tools for South African teams.
Salary and VAT estimates, tax dates, public holidays, a rand reference rate, and the checks we run before a review: mail, DNS, TLS, headers and an AWS bill checklist. They do not store what you type.
25 tools
South Africa
PAYE, UIF, VAT, freelancer rates and provisional tax dates, with the SARS tables dated.
South Africa
PAYE and UIF salary calculator
Monthly PAYE, UIF and a rough take-home figure from the current SARS individual tables.
Open the toolSouth Africa
VAT calculator
Add 15% VAT to an amount, or pull the VAT out of a VAT-inclusive amount.
Open the toolSouth Africa
Freelancer rate calculator
A daily and hourly rate in rand from a target income, leave and South African public holidays.
Open the toolSouth Africa
Provisional tax dates
The three provisional tax dates for a year-end, shifted off weekends and public holidays.
Open the tool
Calendars and rates
Public holidays, business days and rand exchange rates. The same answers are available as JSON.
Calendar
South African public holidays
The year’s public holidays and how many business days that leaves.
Open the toolCalendar
Business days
How many business days fall between two dates, and which public holidays sit in that range.
Open the toolRand
Rand exchange rates
A dated rand reference rate against major currencies. Not the rate a bank will give you.
Open the tool
DevOps
Cost estimates, plan summaries, Dockerfiles, networks and manifests.
AWS
EKS and EC2 cost estimate
A dated on-demand estimate for an EKS control plane and a small EC2 node group.
Open the toolTerraform
Terraform plan explainer
What a plan will create, change, replace or destroy, without echoing resource values.
Open the toolDocker
Dockerfile checker
A short check for the Dockerfile mistakes that show up in reviews.
Open the toolNetwork
CIDR calculator
The network, broadcast, mask and usable hosts for an IPv4 CIDR.
Open the toolData
JSON and YAML formatter
Validate JSON or YAML and show it indented. Invalid documents return the parser error.
Open the toolJWT
JWT decoder
Header, payload and expiry, decoded on this page only. Not a verification.
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Everyday
Passwords, QR codes and a cautious look at suspicious mail.
Passwords
Password guide and generator
A local password generator and a short guide. The API returns the policy and an entropy estimate, never a password.
Open the toolQR
QR code maker
An SVG QR code for a URL or a short note. The text is not stored.
Open the toolMail
Is this email a scam?
Heuristics on the pasted text, plus MX, SPF and DMARC for the sender domain. Not a verdict, and not stored.
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Mail, DNS and sites
Public checks for mail records, DNS, TLS, headers and common AWS waste.
Mail
Email domain health
SPF, DKIM, DMARC, MX, MTA-STS and BIMI, explained in plain language with a grade and a fix for each gap.
Open the toolWeb
Website safety and speed
HTTPS, TLS, security headers, redirects and basic SEO tags. A PageSpeed score is included when the server has a key.
Open the toolAWS
AWS bill sanity check
A checklist for idle servers, NAT gateways, old snapshots, unattached addresses and missing savings plans. No AWS login.
Open the toolDNS
DNS and domain lookup
Records, nameservers, registrar and expiry from the public registration data, and a hint when two resolvers disagree.
Open the toolTLS
SSL/TLS certificate checker
Issuer, expiry, chain and how many days are left on the certificate.
Open the toolHTTP
HTTP headers and redirects
The redirect chain and the response headers on each hop. Cookie values are hidden.
Open the toolKubernetes
Kubernetes YAML linter
Flags missing resource limits, latest tags, privileged containers and missing probes. The file is not stored.
Open the toolCron
Cron expression explainer
What a cron expression means, and the next run times. The default timezone is Africa/Johannesburg.
Open the toolAgents
Is this site agent-ready?
Robots, llms.txt, sitemap, structured data and an OpenAPI document, with a plain-language grade.
Open the tool
Each tool also accepts JSON. The OpenAPI document is at /api/tools, a short guide for automated clients is at /llms.txt, and a machine-readable list is at /.well-known/ai-tools.json.