Pi1541
Steve White developed a replacement for the Commodore 1541 disk-drive. The Pi1541 emulates the 6502 and the two 6522s. The components used are: The Raspberry Pi 3, a I2C Bi-Directional Logic Level Converter and a Micro SD card.
AmigaLove - C64 to Raspberry Pi 3
Mattsoft replaced the motherboard of a Commodore C64 with an Raspberry Pi 3. The parts he used are: Raspberry Pi 3B, Micro SD card, Keyrah v2, power supply and USB & HDMI connectors.
Jan Beta - Tapuino Reloaded
Jan Beta has made a video about the Tapuino Reloaded. This Datassette replacement is developed by Edu Arana and can be used with the C64, C16, and the VIC-20.
Brian Bagnall - Commodore: The Final Years
Brian Bagnall started a Kickstarter campaign for his third book about the history of Commodore. In this book the story of the Commodore computer company and the employees who created some of the most iconic computers of the 80s and 90s.
Wicher Installer - software update
There is new software available for the Wicher. The Wicher turbo card has been designed for installation inside Amiga the A500 / A500+ computer. Changes in this version: Support for larger SD cards (> 4 GByte).
Tynemouth Software - VIC-20 diagnostic system
Tynemouth Software has developed a diagnose system to test a Commodore VIC-20. You can choose between a standard diagnostic cartridge or a combination of a diagnostic cartridge and a 27K or 32K ROM/RAM board.
C128 RM
TheDuckSun is working on a C128 that fits into a C64 case. The proto type has the following features: VIC/VDC switch, 8 bit colour RAM, 6-36 VDC, Dual-SID, etc. You can follow the progress on Forum64.

Official web page for the C128 RM.
Amiga X
Thomas Mayer Foss and Hans Henry Jegtvolden are working on a new Amiga. The concept is an Amiga 1200 style keyboard, a power supply with all the hardware inside and a modern Amiga tank mouse.
Daniel Renner - C64 modulator replacement
Daniel Renner made a video about a replacement for the Commodore C64 modulator. This replacement modulator is a kit and is developed on Forum64.
Retro Tech & Electronics - ACA500+
Retro Tech & Electronics made a video about the ACA500+ for the Amiga 500 with Kickstart 3.1 and Workbench 3.1.
Kompjut0r - SID 8580, ArmSID, SwinSID Ultimate & SwinSID Nano
StrayBoom wrote an article about the SID 8580, ArmSID, SwinSID Ultimate and the SwinSID Nano.
GCart - VIC20
Thomas Lövskog is working on the GCart cartridge for the Commodore VIC20. The features are: 16 GB RAM, MCU, LEDs, buttons, µSD and WiFi.
MechBoard64
MtnBuffalo is working on a replacement keyboard for the Commodore C64, Ulimate64 and the C64 Reloaded. The new keyboard uses Cherry mx red micro switches with an adapter for the original keys.
Vampire / Apollo - Gold 2.9
The Vampire turbo card uses the Apollo FPGA-core to emulate the 68000 CPU and the SAGA graphics chip. The changes for Apollo are: Improvements for fast Power-Off/On and FPU speed (Amiga). Support for Map-ROM & Memory management and EmuTOS (Atari).
Amiga 4000 motherboard
Paul Rezendes started a project to create files for producing an Amiga 4000 motherboard. This work will be accomplished by Integrated Sensor Technologies (Goleta, California). The complete files will be released publicly.
New Amiga 500 cases
After a very successful Kickstarter campaign for the A1200 cases, Philippe Lang now started a new Indiegogo campaign for A500 / A500+ cases.
PLAdvanced+
Freak, Brotboxfan and androSID developed a new PLA that combines up to 9 different 28 pin PLA's from Commodore machines in one: C64, SX64, 1551, CBM 6x0, CBM 7x0, C16 / plus4, CBM 8296 UE5 / UE6 and P500 U78 / U88.
Teensy64
Frank Bösing is working on a Commodore C64 emulator with the Teensy 3.6. The Features are: IEC Bus, ILI9341 SPI display, USB keyboard, reSID, Audio, a simple disk drive emulation and joystick support. The latest changes are: Added a VGA output.
Raspberry Pi Zero - C64
Marco Chiappetta wrote a blog about building a Commodore C64 with the Raspberry Pi Zero. The hardware you need is a Raspberry Pi Zero, a MicroSD card and an USB keyboard. The software you will need is Combian 64.
Amiga 500 Raspberry Pi
Mattsoft wrote a blog on how to build a Rasberry Pi 3 into an Amiga 500 case without destroying the original case. The hardware used for this project: Raspberry Pi 3B, 16GB Micro SD card, Tynemouth Software Amiga 500 USB keyboard adapter, HDMI cable, USB cable and 3D printed brackets.
A500 Power supply
Inkoo Vintage Computing has built a replacement power supply for his Amiga 500. He uses an modern PC power supply with an extra DC-DC converter.
Daniel Renner - Jellinghaus Midi Adapter
Daniel Renner made a video about the Jellinghaus Midi Adapter. He also uses a Cynthcart image in the Superkernal.
Daniel Renner - C64 modifications
Daniel Renner made a number of modifications to his Commodore C64. The modifications are: Modulator Mod, Keyman64, Overlay64, Mixsid, Superkernal, SD2IEC and a Re-Cap.
RetroManCave - Apple Mac vs Amiga
RetroManCave made a video about which Apple Mac is faster the Apple Mac or the Amiga.
Amiga 500 - Chip RAM expansion
Inkoo Vintage Computing has upgraded his Amiga 500. He installed a Chip RAM expansion without making any changes to the motherboard.
Amibian v1.14.0004
Amibian is an Raspberry Pi3 image with the Uae4arm emulator. Amibian transforms your Raspberry Pi3 into an Amiga. Features: Easy install, Midnight Commander for file managing, USB and Ethernet support.
Daniel Renner - C64 reloaded mk2 & Mssiah Midi Sync
Daniel Renner made a video about the C64 reloaded mk2 & Mssiah Midi Sync.
Nunchuk64 - C64
You can watch a video about the Nunchuk64. This is an adapter for the C64 that makes it possible to use Nintendo Nunchuk compatible controller. It is still under development but it will be available soon.

Assembly
PET De Lux - The Commodore PET tribute
Love Hultén made a tribute to the Commodore PET 2001. The PET De Lux is handmade from American walnut. But it has a modern computer inside, emulating video game systems such as Commodore 64, NES and many more.

A video of the PET De Lux.
Vampire / Apollo - Gold2.7
The Vampire turbo card uses the Apollo FPGA-core to emulate the 68000 CPU and the SAGA graphics chip. The changes for Apollo are: Fast Hardware FPU, AMMX2, Memory controller and Workbench Hardware Sprites.
Christian Simpson - Commodore Music Maker
Christian Simpson made a video about the Commodore Music Maker. In the video he adds two control knobs and paints it a new colour.
Mega65
Paul Gardner-Stephen is working on a FPGA version of the Commodore C65. His goal is to make an 8-bit computer for the 21st century. Most recent updates: Extending the Commodore 64 BASIC and new documentation on the MEGA65's enhanced text mode.
Check64
You can watch a video about the Check64 test cartridge. This set is available as an assembly kit at Forum64 and can be used to check the motherboard of a Commodore C64.
6502 Homebrew Computer
Dolo is developing a 6502 computer. The specifications are: 65c02 @ 2.68Mhz, 44KB SRAM, 16KB EEPROM, Video: TMS9918, 16KB SRAM, 6522, SD Card, 6551, Sound: AY-3-8910 and a joystick interface.
Wicher - SD card
7-bit Retro Electronics released an SD card expansion for the Wicher 500i and 500i Ex turbo cards.
The Guru Meditation - AmiParty 21
In this episode of the Guru Meditation: Bill visits the AmiParty 21: Amiga 500 - FPGA board, Amiga 1200 scan doubler, Floppy drive emulator, Headphone amplifier for the Amiga and the GBA 1000.
Retrohax: Amiga 500
On the Retrohax web page you can see how to modify your Amiga 500 computer. Modifications: 1MB, FAT AGNUS, S-Video & Composite, Dual KickStart - 1.3 / 3.1 and a GOTEK.
VicPi
Jagged Path made a modern version of the Commodore VIC-20 with the help of a Raspberry Pi and the Keyrah keyboard and joystick adapter.
IECHost
Luigi Di Fraia has added more functionality to his IECHost device. With this device you can connect a Commodore IEC disk drive via USB to a PC. This time he can format a disk in under 20 seconds.
Wicher 500i - software update
There is new software available for the Wicher 500i. The Wicher 500i turbo card has been designed for installation inside Amiga the A500 / A500+ computer. Features: 68000/68010 CPU, 50 MHz, 8 MB Fast RAM (SIMM72), IDE controller and SPI controller.
Mega65
Paul Gardner-Stephen is working on a FPGA version of the Commodore C65. His goal is to make an 8-bit computer for the 21st century. Most recent updates: Improvements for 16-colour sprite mode, ethernet adapter, SD card, freezing & unfreezing, DMAgic and support for the Amiga mouse.
RetroManCave - Retrobrite
RetroManCave made a video about Retrobrite. The items he is using are: 1000w Full Spectrum Grow Light, Albert Austin Sous Vide Stick, ElectriQ Vacuum Sealer, BeBlonde 40vol Cream Peroxide and Super Star Crystal Clear Peroxide.
X500 Pro computer case
Loriano Pagni started a new Kickstarter campaign for a computer case that is inspired by classic machines such as the Amiga, Atari and Sinclair, but designed for modern hardware.
U36 Multi-ROM - C128
Pyrofer developed a new option ROM for the Commodore C128. This system has a menu and space for 7 ROM images. The selected ROM will be the default ROM even after switching the C128 off and on.
GadgetUK164 - Terrible Fire CD32
GadgetUK164 made a video about the TF328 from Terrible Fire, and a quick look at games "Time Gal" and "The Dream of Rowan" too.
Mega65
Paul Gardner-Stephen is working on a FPGA version of the Commodore C65. His goal is to make an 8-bit computer for the 21st century. Most recent updates: Improvements for sprites and the VIC-III. Support for a cartridge, 1351 mouse, paddles, GEOS and a serial disk-drive.
Wireless joystick
Teemu Leppänen is developing a wireless joystick transmitter and receiver. This system is based on a XBee wireless radio and can be used for Atari style joystick for almost all retro computers.
Retrohax - EasyFlash 3
Retrohax wrote a blog about the assembly of a EasyFlash 3 cartridge for the Commodore C64. He also installed the firmware and loaded a cartridge image into the EasyFlash 3.
Wicher 500i - software update
There is new software available for the Wicher 500i. The Wicher 500i turbo card has been designed for installation inside Amiga the A500 / A500+ computer. Features: 68000/68010 CPU, 50 MHz, 8 MB Fast RAM (SIMM72), IDE controller and SPI controller.
Retro invaders calendars 2018
The new Retro invaders calendar is now available. The theme this time is: Games. The calendars are available in many languages.