Top 12 Open-Source Alternatives to Spike

Product categories

Appointment Scheduling Calendar Communication Email Email Clients Enterprise Communication Group Chat & Notifications Messaging Note Taking Productivity Project Management Task Management

Summary

The top open-source alternatives to Spike are Spark Mail, Notion, and Mailspring. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Spark Mail Landing Page
1

Spark Mail

Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Pricing:
- Open Source
#Email #Email Clients #Calendar 30 social mentions
Notion Landing Page
2

Notion

All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Pricing:
- Open Source
#Productivity #Work Collaboration #Note Taking 438 social mentions
Mailspring Landing Page
3

Mailspring

Mailspring is a mail client for Mac, Windows and Linux.
Pricing:
- Open Source
#Email #Email Clients #Calendar 25 social mentions
FairEmail Landing Page
4

FairEmail

Open source, privacy friendly email app
Pricing:
- Open Source
#Email #Email Clients #Calendar 52 social mentions
Signal Landing Page
5

Signal

Fast, simple & secure messaging. Privacy that fits in your pocket.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 180 social mentions
Skiff Landing Page
6

Skiff

Simple & secure privacy-first notes and collaboration
Pricing:
- Open Source
#Web App #Productivity #Writing Tools 47 social mentions
Simplenote Landing Page
7

Simplenote

The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.
Pricing:
- Open Source
#Note Taking #Task Management #Project Management 78 social mentions
Monika Landing Page
8

Monika

Get notified from whatever app you want (Telegram, Slack, etc) when your website or API is down based on HTTP status code or content of the response, or when your server is slow.
Pricing:
- Open Source
#Productivity #Open Source #Developer Tools
ZeroNet Landing Page
9

ZeroNet

ZeroNet. Open, free and uncensorable websites, using Bitcoin cryptography and BitTorrent network. Download for Windows 9. 6MB · Unpack · Run ZeroNet. exe.
Pricing:
- Open Source
#Security #Productivity #Email Collaboration 66 social mentions
Franz Landing Page
10

Franz

Franz is your messaging app for WhatsApp, Facebook Messenger, Slack, Gmail, Telegram and many many more.
Pricing:
- Open Source
- Freemium
- €4.0 / Monthly
#Group Chat & Notifications #Messaging #Communication 28 social mentions
FullCalendar Landing Page
11

FullCalendar

FullCalendar is an open-source JavaScript event calendar.
Pricing:
- Open Source
#Appointments and Scheduling #Calendar #Appointment Scheduling 13 social mentions
Nextcloud Mail Landing Page
12

Nextcloud Mail

💌 Mail app for Nextcloud
Pricing:
- Open Source
#Email #Email Clients #Enterprise Communication 5 social mentions