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September 29, 2023
October 27, 2018

ripienaar/free-for-dev: A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev
The Power of Serverless for Front-End Developers | The Power of Serverless

Mattermost: Open Source, Private Cloud Slack Alternative
Mattermost Integrations - Powerful integrations to help your team do better work, faster.
Zulip: Open-source team chat with topic-based threading

LivingWithPixels - YouTube web design and hosting

email

Postage

香港郵政 - 普通信件/郵包

Portfolio/Resume

How to Build an Effective Dev Portfolio

履歷|漁翁撒網也應專業點!犯上 4 大寫 CV 毛病 印象分立即清零
CV 要避免寫這 10 個字!專家:別用“responsible for”+35 個實用詞語

Kanban/Admin Panel/Dashboard

17 Best React Admin Dashboard Templates 2019 - Colorlib
Free React Dashboards - Chakra, M-UI and Ant Design - DEV Community

Kanban Explained in 10 Minutes | Kanbanize
Kanban Explained in 10 Minutes | Kanbanize
Wekan — Open-Source kanban

Self-hosted Retool

TasksBoard | Desktop app for Google Tasks

React Admin
React-admin - Documentation
marmelab/react-admin: A frontend framework for building admin SPAs on top of REST services, using React and Material Design 2.x, admin-on-rest (1.x) is in maintenance mode
react-admin/UPGRADE.md at master · marmelab/react-admin
How to build an admin panel with React - LogRocket Blog

AdminBro - Auto-generated admin panel for node.js with react Home
SoftwareBrothers/admin-bro: AdminBro is an admin panel for apps written in node.js

Cube.js | Open Source Analytics Framework
Real Time Dashboard Guide Demo

Invoicing

Free Open-Source Invoices, Expenses & Time-Tracking | Invoice Ninja

Crater Invoice - Financial OS as a Service
crater-invoice/crater: Open Source Invoicing Solution for Individuals & Businesses

Crater: Open-Source Laravel Invoicing App - Laravel News
Crater Invoices - Open Source, Self Hosted Invoicing and Billing software with Power! - YouTube

Payment

Building a payments system with React and Stripe - LogRocket Blog

在不支援金流的網站拍賣物品,如何建立屬於自己的 Paypal 收款連結? | T 客邦

掌舖 Boutir - 一部手機就可以開網店的工具
Digital Payment Gateway | PayDollar

Membership Site Handbook | Memberful.com

Online payment processing for internet businesses - Stripe 3.5% + HK$2.5 per transaction

Learn how PayPal can benefit you and yours at home – PayPal
Accept Payments | Accept Credit Cards | PayPal HK Commercial Transaction ~4%, QR Code 1.7%; Payout $7

Best way for artists and creators to get sustainable income and connect with fans | Patreon 5% of monthly subscriptions
Pricing | Patreon

Memberful — Monetize your passion with membership. | Memberful.com 10% of income, requires Stripe
How it works | Memberful.com subscription, goods, courses

Cap. 112 Inland Revenue Ordinance
eCharity Online Donation Payment Service | PayDollar
愛心「傳」款
屬公共性質的慈善機構及信託團體的稅務指南
Tax Guide for Charitable Institutions and Trusts of a Public Character

Licensing

What's the best way to sell a client-side JavaScript library?

Unlock - Cloud-based billing, licensing & distribution

Sell digital products and downloads the easy peasy way with Lemon Squeezy

Gumroad – Sell what you know and see what sticks
License Keys - Gumroad Help Center
Custom Delivery - Gumroad Help Center

Fixing Schedule

Free online meeting scheduling tool | Doodle

Project Management

The Top 10 Free and Open Source Project Management Software for Your Small Business - Capterra Blog

GanttProject: free desktop project management app Java app

2-plan Desktop Java app
2-plan Team – Open-Source Project Software web app

Taiga.io

Overview - Redmine

JIRA - Issue & Project Tracking Software | Atlassian

The Trac Project

About :: Bugzilla :: bugzilla.org

Analytics

google-apps#Google Analytics

Workflow

Joget – Open Source Low-Code Application Platform, Business Automation and Workflow Software for Faster, Simpler Digital Transformation GPL
Joget Workflow for Google Apps - G Suite Marketplace
Joget Workflow v6 - Apps and the App Center - YouTube

Wexflow - Open source workflow engine
Imixs-Workflow | Open Source Workflow Engine

Budibase | Build internal tools in minutes, the easy way

n8n.io - Free and Open Workflow Automation Tool
n8n-io/n8n: Free and open fair-code licensed node based Workflow Automation Tool. Easily automate tasks across different services.
n8n - an open source, self hosted info transform & workflow automation tool w/ drag and drop ease. - YouTube

SMS Reception

could have used #Twilio, but existing service is easier and cheaper

SMS-Activate - service for receiving virtual SMS online to virtual SIM

History is public:
Receive SMS online | Temporary Phone Number | Russian Federation Phone Number
Receive SMS Online 24/7, Secure Verification - AnonymSMS
Receive SMS Online for FREE - UK,Romania,USA,Spain,France,Germany,Russia
Receive SMS Online | Temporary Phone Number | Receive SMS Free
Receive SMS Online | Temporary and Disposable Phone Numbers
Temporary Phone Numbers | Receive SMS online

SMS Delivery

Plivo - APIs for SMS, Voice Calls & Phone Numbers Globally.
All Your Digital Marketing Tools in One Place – Sendinblue
Nexmo Developer

Twilio

Twilio - Communication APIs for SMS, Voice, Video and Authentication
Each account has master account SID and auth token, but it is safer to create revocable API keys and secrets per application in Twilio Console - Project API Keys.

Getting Started with Alphanumeric Sender ID for Twilio Programmable SMS – Twilio Support
Note: Pre-registered Alphanumeric Sender ID Required for A2P SMS in Hong Kong Effective January 1, 2022

Phone Number Verification without Regular Expression - Twilio

China SMS Template Whitelisting – Twilio Support

What's App

How to use click to chat | WhatsApp Palīdzības centrs

https://wa.me/<phone>?text=<urlencodedtext>

Free API to Send Whatsapp Messages - CallMeBot API
ESP32: Send Messages to WhatsApp | Random Nerd Tutorials

Monetization

Patreon vs YouTube Channel Membership - Which one is better?

SEO

Webmasters - Sharing
Ahrefs - SEO Tools & Resources To Grow Your Search Traffic
Think with Google - Discover Marketing Research & Digital Trends
【SEO 第一聖經】史上最齊全 SEO 自學筆記 | RE:LAB

Meta Tags — Preview, Edit and Generate
OpenGraph - Preview Social Media Share and Generate Metatags
Open Graph Checker - Facebook Open Graph Tags Preview Online Free
NachoSEO/seo-scraper: Scrape SEO elements or whatever you need with this scraper built in Node.js

Sharing Debugger - Facebook for Developers bust Facebook cache
How to Use Facebook Debugger to Fix Images in Shares

Open Graph Meta Tags: Everything You Need to Know
What You Need to Know About Creating FB's Link Previews

Introducing OG Image Generation: Fast, dynamic social card images at the Edge – Vercel
vercel/satori: Enlightened library to convert HTML and CSS to SVG
Vercel OG Image Playground
Generate Images Programmatically on the Edge - YouTube

Actionable SEO Tips and Strategies That Work
The Anatomy of a Large-Scale Hypertextual Web Search Engine – Google Research PageRank paper in 1998
Introducing the Knowledge Graph: things, not strings Google used graphs in 2012
Research Papers May Show What Google MUM Is Google announces internal trial of MUM in 2021

How to build fast and SEO friendly web apps using ReactJs, Redux and NextJs
Make Your NextJS Website more SEO Friendly in 2022. Easily Add an Auto-updating Sitemap to it. | by Salvor Pirenne | Dec, 2021 | Level Up Coding

WordPress

Ultimate WordPress SEO Guide: Optimize Your Site in 2021
WordPress SEO Made Simple - A Step-by-Step Guide (UPDATED)

WordPress SEO Beyond the Basics: 8 Things You Must Do Next
10 Awesome WordPress SEO Plugins to Optimize Your Site
WordPress SEO Without an SEO Plugin

How to Setup All in One SEO for WordPress Correctly (Ultimate Guide)

Joomla

Search Engine Optimization (SEO) in Joomla

Forms/Survey

10 Tools For Conducting Live Polls During A Presentation | Presentation Guru
Top 21 Best Online Survey Software and Questionnaire Tools in 2021 - Mopinion

Google Forms: Free Online Surveys for Personal Use
Google Forms cheat sheet | Computerworld

SurveyMonkey: The World’s Most Popular Free Online Survey Tool
Create online forms with Formlets, the best online form creator
Create Free Online Surveys, Quizzes and Forms - FreeOnlineSurveys
Free Online Form Builder & Form Creator | JotForm
Cognito Forms: Free Online Form Builder

Join a presentation - Mentimeter response to word cloud

Slido - Audience Interaction Made Easy

Free Online Form Builder & Form Creator | Jotform

How to Create a Contact Form With Next.js and Netlify | CSS-Tricks

Document

Welcome to relatorio’s documentation! — relatorio documentation generates OpenOffice document from code

Fdawgs/docsmith: RESTful API for converting clinical documents and files

Excel (Pandas)

Working with Python Pandas and XlsxWriter — XlsxWriter Documentation
Example: Pandas Excel output with a line chart — XlsxWriter Documentation
Learn How to (easily!!) do 3 Advanced Excel Tasks in Python | by Nik Piepenbreier | Towards Data Science
How to Automate Excel Tasks with Python

[程序员小飞]2020 年 Python 处理 Excel 最新基础入门教程 - YouTube

Python Excel
Chapter 12 – Working with Excel Spreadsheets - Automate the Boring Stuff with Python

How to integrate Excel with Python | Towards Data Science
How to Supercharge Excel With Python | by Costas Andreou | Towards Data Science xlwings
Will Python Kill VBA in 2021? - YouTube xlwings
Excel to Python. Building front-end Excel workbooks for… | by James Briggs | Towards Data Science openpyxl
A Complete Yet Simple Guide to Move from Excel to Python | by Frank Andrade | Apr, 2021 | Towards Data Science

Automate Excel with Python | by KahEm Chu | May, 2021 | Towards Data Science PyWin32

openpyxl

openpyxl - A Python library to read/write Excel 2010 xlsx/xlsm files — openpyxl documentation
A Guide to Excel Spreadsheets in Python With openpyxl – Real Python

openpyxl.workbook.workbook module — openpyxl documentation
openpyxl.worksheet.worksheet module — openpyxl documentation
openpyxl.cell.cell module — openpyxl documentation

openpyxl.styles package — openpyxl documentation
Working with styles — openpyxl documentation

Worksheet Tables — openpyxl documentation
openpyxl.worksheet.table module — openpyxl documentation

XlsxWriter

Better for creating new file

Creating Excel files with Python and XlsxWriter — XlsxWriter Documentation

The Workbook Class — XlsxWriter Documentation
The Worksheet Class — XlsxWriter Documentation

The Format Class — XlsxWriter Documentation
Tutorial 2: Adding formatting to the XLSX File — XlsxWriter Documentation

PyXLL

Paid add-on to run Python in Excel

The Python Add-In for Microsoft Excel | PyXLL
Tools for Working with Excel and Python | PyXLL

Multi-Dimensional Optimization: A Better Goal Seek | PyXLL
A Better Excel Goal Seek using Python - Towards Data Science

Word

python-docx — python-docx documentation
第 105 天: Python 操作 Word - 纯洁的微笑博客
Reading and Writing MS Word Files in Python via Python-Docx Module

Getting Started
dolanmiu/docx: Easily generate .docx files with JS/TS with a nice declarative API. Works for Node and on the Browser.

PDFTron - PDF SDK with 100's of Features, Fast Setup viewer

FlowPaper - Responsive online PDF viewer for your website viewer with fancy effects

ReportLab

ReportLab open-source PDF Toolkit - ReportLab.com Python
MrBitBucket/reportlab-mirror: mirror of https://bitbucket.org/rptlab/reportlab
Documentation - ReportLab.com
Reportlab | The Mouse Vs. The Python
A Simple Step-by-Step Reportlab Tutorial | The Mouse Vs. The Python
ReportLab 101: The textobject | The Mouse Vs. The Python

borb

borb | Read, write, and edit PDF files with borb, a pure python library AGPL
jorisschellekens/borb: borb is a library for reading, creating and manipulating PDF files in python.
jorisschellekens/borb-examples

Creating a PDF Document in Python with borb
Creating PDF Invoices in Python with borb

iCalendar

RFC 5545 - Internet Calendaring and Scheduling Core Object Specification (iCalendar)

ics
Ics.py : iCalendar for Humans — ics.py documentation

icalendar
Internet Calendaring and Scheduling (iCalendar) for Python — icalendar documentation
How to use Python to create an iCalendar file from a Word table - Erik Marsja