FlosForge Toolbox for macOS

Native developer toolbox for macOS

All your essential developer utilities in one native Mac app. Encode, hash, format, convert, and generate without pasting data into random websites. Features offline-first design, complete run history, and support for local AI models.

No subscription
No account
Runs locally

Coming soon

Email me when it is out See it working

FlosForge Toolbox on macOS, with the category sidebar, a list of generators and one tool open

Tools: 420 in 17 categories
Offline: 400 of them never touch the network
Requires: macOS 26 or later
Distribution: Mac App Store, sandboxed

What is in the box

FlosForge Toolbox ships 420 tools in 17 categories. Below is a sample of the library.

FlosForge Toolbox feature categories

All listed83Generators13Text13Date & Time13AI prompt tools24API tools6Running, history and policy14

.gitignore Generator
Compose a .gitignore from common stack templates.
Bulk Fake Records
Emit N fake person records as JSON, CSV, or SQL.
Chmod Calculator
Convert between octal and symbolic permissions.
Colour Palette
Build a harmony palette around a base colour.
Cron Expression
Explain a cron schedule and list its next runs.
Dice Roller
Roll standard dice notation like 2d6+3.
Fake Company
Invent a company name, domain, and profile.
Fake Person
Invent a person with contact details for fixtures.
IBAN Generator
Generate structurally valid test IBANs.
IBAN Validator
Validate IBAN structure and check digits.
ISBN, EAN & UPC Check Digits
Validate or complete ISBN, EAN, and UPC codes.
Lorem Ipsum
Generate placeholder prose by word, sentence, or paragraph.
Luhn Validator
Check card numbers and compute the check digit.
ASCII Banner
Render short text as a block-letter banner.
Add Line Numbers
Prefix every line with a padded sequence number.
Case Converter
Convert identifiers between every common casing.
Column Formatter
Align delimited text into padded columns.
Deduplicate Lines
Remove repeated lines and report what was dropped.
Extract From Text
Pull URLs, emails, IPs, numbers, or quotes out of text.
Filter Lines
Keep or drop lines by substring, regex, or blankness.
Find & Replace
Replace text or regex matches with capture references.
HTML to Markdown
Convert HTML markup back into Markdown.
Homoglyph Detector
Spot lookalike characters and mixed scripts.
Invisible Character Detector
Find and strip zero-width and lookalike spaces.
Join Lines
Collapse lines into one string with a delimiter.
Leetspeak
Convert text to or from 1337 5p34k.
Age Calculator
Age in years, months and days from a birth date.
Alternate Epoch Converter
Apple, Windows FILETIME, WebKit and DOS times.
Cron Expression
Explain a cron schedule and list its next runs.
Current Timestamp
The moment right now in every format.
Date Calculator
Add or subtract an interval from a date.
Date Difference
Measure the gap between two dates.
Date Format Cheat Sheet
strftime against Unicode date patterns.
Duration Converter
Convert between 1h30m, seconds and ISO 8601.
ISO 8601 Parser
Break an ISO 8601 string into its components.
MongoDB ObjectId
Read the timestamp out of an ObjectId.
Time Zone Converter
Show one moment across several time zones.
Unix Timestamp Converter
Convert epoch time to and from a date.
Week & Quarter Calculator
Week number, day of year and quarter for a date.
Commit Message
Turn a diff into a message worth reading.
curl → Code
Rewrite a curl command in your language.
Explain Regex
Break a pattern down into plain English.
Explain This Code
Walk through what a snippet does.
Explain This Command
What a shell one-liner does before you run it.
Explain This Cron
When a schedule expression actually fires.
Explain This Error
What an error or stack trace actually means.
Explain This SQL
What a query returns, and what it’ll cost.
JSON → Type
Turn a JSON sample into type declarations.
Name This Thing
Candidate names, with the trade-offs.
Rewrite for Clarity
Same meaning, better sentences.
Rubber Duck
Talk through a bug you’re stuck on.
Summarize
Condense anything to the length you want.
Write a Regex
Describe what to match, get the pattern.
Write a SQL Query
Schema plus a question, in and query out.
Prompts of your own
The built-in set installs as ordinary prompts — edit, rename or delete any of them, and write new ones beside them.
Where a prompt appears
As an action on another tool’s result, as its own tool in the library, or both.
Anchors as fields
Write {{anchors}} in the prompt and each becomes an input, including a pick-one list of values you name.
Apple Intelligence first
On device, no key, no network — and the run says so afterwards.
Ollama second
Local models over the Ollama HTTP API, at an address you set.
Google Gemini only on request
Off until you paste a Google AI Studio key; nothing is sent to it unless you picked it for that prompt.
Runs you didn’t start
A live tool recomputing, a chained tool, a panel that works when it opens — either they stay on device, or you are asked first.
Token limits
Per hour, day, week or month, for all hosted providers together or one on its own. On-device models are never counted against them.
The usage report
Every AI call the app has made, kept apart from run history, filterable and exportable as CSV, JSON or Markdown.
Targets
A reusable base URL, with the credentials that apply to anything built on it.
A request as a tool
Method, path, headers and query parameters — saved, and listed in your library under Network.
Authentication
Taken from the credentials linked on the target, rather than typed into the tool.
Response handling
Pretty JSON or plain text, decided automatically or by you.
Send test request
Try it from the editor before it becomes something you run.
Credentials in the Keychain
Scoped to the workspace, and never written to run history or to a shared workspace export.
Run, Reset, Presets
A deliberate press by default; presets carry a set of inputs you use often.
Run tools as you type
Off by default — a Run press avoids executing half-typed input.
Clipboard suggestions
Recognises a JWT, JSON, a timestamp or an IP and offers the tools for it. The clipboard is read only when the app comes forward, never stored, never sent anywhere.
Send to Tool
One tool’s result becomes the next tool’s input without a round trip through the clipboard.
Run History
Every run in the workspace, with the inputs exactly as given and the output as produced at the time.
Re-run and Load Inputs
Repeat an old run, or bring its inputs back into the form to change one of them.
Pinning
Pinned runs are never pruned, however low you set the per-tool limit.
Favorites and Recently Used
Two rows at the top of the library, and a launch grid when no tool is open.
The menu bar item
Favourites, recent tools and ⌘K without switching to the window first.
Workspaces
Switching swaps the whole surface: keys, folders, prompts, history and network policy.
Network and AI policy
Per workspace. With the network off, tools that reach for it refuse to run rather than failing silently.
Tool categories
Switch whole categories out of a workspace’s library.
Import & Export
A workspace’s folders, prompts, saved models and policy travel as a file. API keys and run history are never included.
Require unlock to open
A PIN stored only as a salted hash on this Mac, never in plain text.

.gitignore Generator
Compose a .gitignore from common stack templates.
Bulk Fake Records
Emit N fake person records as JSON, CSV, or SQL.
Chmod Calculator
Convert between octal and symbolic permissions.
Colour Palette
Build a harmony palette around a base colour.
Cron Expression
Explain a cron schedule and list its next runs.
Dice Roller
Roll standard dice notation like 2d6+3.
Fake Company
Invent a company name, domain, and profile.
Fake Person
Invent a person with contact details for fixtures.
IBAN Generator
Generate structurally valid test IBANs.
IBAN Validator
Validate IBAN structure and check digits.
ISBN, EAN & UPC Check Digits
Validate or complete ISBN, EAN, and UPC codes.
Lorem Ipsum
Generate placeholder prose by word, sentence, or paragraph.
Luhn Validator
Check card numbers and compute the check digit.

ASCII Banner
Render short text as a block-letter banner.
Add Line Numbers
Prefix every line with a padded sequence number.
Case Converter
Convert identifiers between every common casing.
Column Formatter
Align delimited text into padded columns.
Deduplicate Lines
Remove repeated lines and report what was dropped.
Extract From Text
Pull URLs, emails, IPs, numbers, or quotes out of text.
Filter Lines
Keep or drop lines by substring, regex, or blankness.
Find & Replace
Replace text or regex matches with capture references.
HTML to Markdown
Convert HTML markup back into Markdown.
Homoglyph Detector
Spot lookalike characters and mixed scripts.
Invisible Character Detector
Find and strip zero-width and lookalike spaces.
Join Lines
Collapse lines into one string with a delimiter.
Leetspeak
Convert text to or from 1337 5p34k.

Age Calculator
Age in years, months and days from a birth date.
Alternate Epoch Converter
Apple, Windows FILETIME, WebKit and DOS times.
Cron Expression
Explain a cron schedule and list its next runs.
Current Timestamp
The moment right now in every format.
Date Calculator
Add or subtract an interval from a date.
Date Difference
Measure the gap between two dates.
Date Format Cheat Sheet
strftime against Unicode date patterns.
Duration Converter
Convert between 1h30m, seconds and ISO 8601.
ISO 8601 Parser
Break an ISO 8601 string into its components.
MongoDB ObjectId
Read the timestamp out of an ObjectId.
Time Zone Converter
Show one moment across several time zones.
Unix Timestamp Converter
Convert epoch time to and from a date.
Week & Quarter Calculator
Week number, day of year and quarter for a date.

Commit Message
Turn a diff into a message worth reading.
curl → Code
Rewrite a curl command in your language.
Explain Regex
Break a pattern down into plain English.
Explain This Code
Walk through what a snippet does.
Explain This Command
What a shell one-liner does before you run it.
Explain This Cron
When a schedule expression actually fires.
Explain This Error
What an error or stack trace actually means.
Explain This SQL
What a query returns, and what it’ll cost.
JSON → Type
Turn a JSON sample into type declarations.
Name This Thing
Candidate names, with the trade-offs.
Rewrite for Clarity
Same meaning, better sentences.
Rubber Duck
Talk through a bug you’re stuck on.
Summarize
Condense anything to the length you want.
Write a Regex
Describe what to match, get the pattern.
Write a SQL Query
Schema plus a question, in and query out.
Prompts of your own
The built-in set installs as ordinary prompts — edit, rename or delete any of them, and write new ones beside them.
Where a prompt appears
As an action on another tool’s result, as its own tool in the library, or both.
Anchors as fields
Write {{anchors}} in the prompt and each becomes an input, including a pick-one list of values you name.
Apple Intelligence first
On device, no key, no network — and the run says so afterwards.
Ollama second
Local models over the Ollama HTTP API, at an address you set.
Google Gemini only on request
Off until you paste a Google AI Studio key; nothing is sent to it unless you picked it for that prompt.
Runs you didn’t start
A live tool recomputing, a chained tool, a panel that works when it opens — either they stay on device, or you are asked first.
Token limits
Per hour, day, week or month, for all hosted providers together or one on its own. On-device models are never counted against them.
The usage report
Every AI call the app has made, kept apart from run history, filterable and exportable as CSV, JSON or Markdown.

Targets
A reusable base URL, with the credentials that apply to anything built on it.
A request as a tool
Method, path, headers and query parameters — saved, and listed in your library under Network.
Authentication
Taken from the credentials linked on the target, rather than typed into the tool.
Response handling
Pretty JSON or plain text, decided automatically or by you.
Send test request
Try it from the editor before it becomes something you run.
Credentials in the Keychain
Scoped to the workspace, and never written to run history or to a shared workspace export.

Run, Reset, Presets
A deliberate press by default; presets carry a set of inputs you use often.
Run tools as you type
Off by default — a Run press avoids executing half-typed input.
Clipboard suggestions
Recognises a JWT, JSON, a timestamp or an IP and offers the tools for it. The clipboard is read only when the app comes forward, never stored, never sent anywhere.
Send to Tool
One tool’s result becomes the next tool’s input without a round trip through the clipboard.
Run History
Every run in the workspace, with the inputs exactly as given and the output as produced at the time.
Re-run and Load Inputs
Repeat an old run, or bring its inputs back into the form to change one of them.
Pinning
Pinned runs are never pruned, however low you set the per-tool limit.
Favorites and Recently Used
Two rows at the top of the library, and a launch grid when no tool is open.
The menu bar item
Favourites, recent tools and ⌘K without switching to the window first.
Workspaces
Switching swaps the whole surface: keys, folders, prompts, history and network policy.
Network and AI policy
Per workspace. With the network off, tools that reach for it refuse to run rather than failing silently.
Tool categories
Switch whole categories out of a workspace’s library.
Import & Export
A workspace’s folders, prompts, saved models and policy travel as a file. API keys and run history are never included.
Require unlock to open
A PIN stored only as a salted hash on this Mac, never in plain text.

Run, reset and save presets

Every tool is the same shape: named inputs, its own options, and a result you can copy, download, feed into another tool, or hand to a prompt. The footer says how long the run took.

Run, Reset and saved Presets on every tool
Copy All, Download and Send to Tool on every result
Actions runs an AI prompt on what the tool just produced
A filter that matches names, formats and CLI equivalents

The Cron Expression tool, showing the parsed schedule, its fields and the next runs

Full run history

Run History keeps what each run was given and what it produced, per workspace and per tool. Re-run it, load its inputs back into the form, or pin it so pruning leaves it alone.

Inputs recorded exactly as the run was given them
Filter by tool, kind, time, outcome and what triggered it
Re-run and Load Inputs from any entry
Pinned runs are never pruned

Run History for the workspace, with one entry expanded to show its inputs and output

AI Prompts as tools

The built-in prompts install as ordinary tools you can edit, rename or delete. Write {{anchors}} into the text and each becomes an input field — one of them can be a pick-one list of values you name — and you tick which providers are allowed to run it.

Appears as an action on another tool’s result, as its own library entry, or both
Apple Intelligence first, then Ollama, then Gemini only once you paste your own key
Every run reports the provider, the model, tokens in and out, and where it executed
Token limits per hour, day, week or month — on-device models are never counted

The prompt editor, showing the prompt text, its anchors and the fields they produce

HTTP requests as tools

A target is a reusable base URL with the credentials that apply to anything built on it. A request built on that target — method, path, headers, query parameters — becomes an entry in your library like any other tool, and borrows the target’s credentials rather than holding its own.

Fire a test request from the editor before it joins the library
Credentials live in the Keychain, scoped to the workspace
Never written to run history, and never included in a workspace export
Pretty JSON or plain text, decided automatically or by you

The API tool editor, with a request path, query parameters and a test button

Per-workspace keys and policies

Switching workspace swaps the whole surface: keys, folders, prompts, history, which tool categories exist, and the network and AI policy. With the network off, a tool that reaches for it refuses to run and says so — which is not the same as quietly returning nothing.

Per-workspace network and AI policy, not a global switch
Whole tool categories can be switched out of a workspace’s library
Folders, prompts, saved models and policy travel as a file; keys and history never do
Require unlock to open, as a salted hash on this Mac and never in plain text

The Current Workspace settings pane, showing the network and AI policy switches

See it working

Take a look at the user interface of the application.

The Case Converter open beside the list of text tools

The Favorites row selected in the sidebar, listing starred tools

The Prompts library beside a prompt running against a SQL query

The History tab of a single tool, with one past run selected

A prompt sheet run on a tool’s result, showing the response and the model that produced it

The AI usage report window, with totals, a breakdown by provider and a list of calls

The Actions menu open over a tool result, listing the prompts that can act on it

The AI Providers settings pane, showing the acknowledgements and each provider’s state

The General settings pane, showing the clipboard, running and history options

Opt-in AI that runs on your Mac first

FlosForge Toolbox answers with models running on your own hardware. A cloud provider is used only if you switch it on and supply your own key.

First

Apple Intelligence

On-device. Nothing leaves your Mac — no key, no account, no cost.

Default
Then

Ollama

Your own local models, on your own machine or a box you control.

Local
Only if you say so

Gemini API

Off until you enable it and enter your own API key. Your key, your account, your billing — never proxied.

Opt-in

What Toolbox does not do

Here is exactly what Toolbox does not do:

No encryption or decryption tools. Hashing, HMAC, key derivation, one-time passwords and digital signatures are present; confidentiality ciphers are deliberately not, so the App Store submission declares no non-exempt cryptography.
No ICMP ping, SYN scan or traceroute. TCP Ping and the port scanner use full TCP connections.
No shell or process execution of any kind. The sandbox forbids it.
No cloud sync, no accounts, no team sharing. Transfer between Macs is by export and import, or backup and restore.
No update checker. The Mac App Store handles updates.
No cost, price or currency figures for AI. Usage is counted in tokens only, because a price list compiled into an app is wrong the day a provider moves a rate.
The PIN lock is a convenience lock, not encryption.

How every FlosForge app works

No telemetry

No analytics, no crash reporting, no usage pings. Not configurable — simply absent.
Local storage only

Your data stays on your own device, stored in private application sandboxes under your control.
Open exports

Everything exports to standard formats you own (CSV, GPX, JSON, Markdown), with zero lock-in.

Coming soon

FlosForge Toolbox for macOS is in active testing in real-world scenarios, and will be released in the near future.

Development (done) Features being built
Active Testing (current stage) In daily use, tested in real-world scenarios
Release prep Store listing and final checks
Released Available to download

Native developer toolbox for macOS

What is in the box

.gitignore Generator

Bulk Fake Records

Chmod Calculator

Colour Palette

Cron Expression

Dice Roller

Fake Company

Fake Person

IBAN Generator

IBAN Validator

ISBN, EAN & UPC Check Digits

Lorem Ipsum

Luhn Validator

ASCII Banner

Add Line Numbers

Case Converter

Column Formatter

Deduplicate Lines

Extract From Text

Filter Lines

Find & Replace

HTML to Markdown

Homoglyph Detector

Invisible Character Detector

Join Lines

Leetspeak

Age Calculator

Alternate Epoch Converter

Cron Expression

Current Timestamp

Date Calculator

Date Difference

Date Format Cheat Sheet

Duration Converter

ISO 8601 Parser

MongoDB ObjectId

Time Zone Converter

Unix Timestamp Converter

Week & Quarter Calculator

Commit Message

curl → Code

Explain Regex

Explain This Code

Explain This Command

Explain This Cron

Explain This Error

Explain This SQL

JSON → Type

Name This Thing

Rewrite for Clarity

Rubber Duck

Summarize

Write a Regex

Write a SQL Query

Prompts of your own

Where a prompt appears

Anchors as fields

Apple Intelligence first

Ollama second

Google Gemini only on request

Runs you didn’t start

Token limits

The usage report

Targets

A request as a tool

Authentication

Response handling

Send test request

Credentials in the Keychain

Run, Reset, Presets

Run tools as you type

Clipboard suggestions

Send to Tool

Run History

Re-run and Load Inputs

Pinning

Favorites and Recently Used

The menu bar item