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PS4 Mednafen Emulator 2-Players Config Mod via Markus95
Following the Mednafen PS4 Emulator PKG release earlier this month, PlayStation 4 scene developer @Markus95 (aka @Kus00095) shared on Twitter a 2-Players Configuration Mod for the Mednafen emulator PS4 port by @zezu420 (aka Znullptr on Twitter or dmiller423 on Github) who recently set up a Github Sponsors Page for supporters of his work. 
Download: mednafen0.2.rar (46.61 KB) / Mednafen_PS4.rar (31.61 MB)
Here's more on the release from Logic-Sunrise.com, roughly translated to quote:
After a few days of research and work, here is a second version of Mednafen (a multi-emulators) including some new and not least.
Indeed, since the first publication, I decided to improve this fabulous homebrew developed at the base by Znullptr, by adding new features so that it becomes a must (if it is not already the case).
After publishing a first version of the .cfg, allowing the emulation of several retro consoles, here is a second version with its small batches of novelties.
In this update you will now find the mode 2 players for all the consoles of lounges (PlayStation, Megadrive, Super Nintendo, NES, etc ...), you can play 2 in your favorite games, the second controller PS4 is so now supported.
You will also find the functional keys L2, R2, L3 and R3 for the PlayStation emulation, but also the emulation of the joystick 6 buttons for Megadrive allowing you to play more easily Street Fighter II for example.
Changelog:
Download: mednafen0.2.rar (46.61 KB) / Mednafen_PS4.rar (31.61 MB)
Here's more on the release from Logic-Sunrise.com, roughly translated to quote:
After a few days of research and work, here is a second version of Mednafen (a multi-emulators) including some new and not least.
Indeed, since the first publication, I decided to improve this fabulous homebrew developed at the base by Znullptr, by adding new features so that it becomes a must (if it is not already the case).
After publishing a first version of the .cfg, allowing the emulation of several retro consoles, here is a second version with its small batches of novelties.
In this update you will now find the mode 2 players for all the consoles of lounges (PlayStation, Megadrive, Super Nintendo, NES, etc ...), you can play 2 in your favorite games, the second controller PS4 is so now supported.
You will also find the functional keys L2, R2, L3 and R3 for the PlayStation emulation, but also the emulation of the joystick 6 buttons for Megadrive allowing you to play more easily Street Fighter II for example.
Changelog:
- 2 players available for all home consoles
- Functional L2, R2, L3 and R3 keys for PlayStation emulation
- Functional X, Y and Z keys for Megadrive emulation (L1 = X _ Triangle = Y _ R1 = Z)
- Added button select (L2) and inversion buttons A and B for NES emulation
IPS PS4: Module to Control a PlayStation 4 via IP-Symcon by Schnittcher
Proceeding PS4 Waker, PS4 Alexa and PyWakePS4 on BT developer Schnittcher made available on Github IPS PS4 which is module to control a PlayStation 4 console via IP-Symcon home automation software. 
Download: IPS-PS4-master.zip / GIT
To quote via KaiS, roughly translated: Hello everybody,
Here is a module to control a PlayStation 4 via IP-Symcon.
On the PS4 must be checked under Settings - Energy saving settings - In sleep mode available functions - Enable the PS4 from the network enabled, otherwise waking the PS4 does not work!
From version 5.0
The following functions are available:
More information about the ongoing games.
The module can be installed via the module Store.
The documentary can be found here: PlayStation 4 | Your Smart Home
quay
And from the README.md, roughly translated: IPS PS4
With this module it is possible to control a PS4 system via IP-Symcon. The module is still in a beta phase.
1. Functional scope
Download: IPS-PS4-master.zip / GIT
To quote via KaiS, roughly translated: Hello everybody,
Here is a module to control a PlayStation 4 via IP-Symcon.
On the PS4 must be checked under Settings - Energy saving settings - In sleep mode available functions - Enable the PS4 from the network enabled, otherwise waking the PS4 does not work!From version 5.0
The following functions are available:
- Wake the PS4 from sleep mode
- Suspend PS4
- Launch PS4 games / apps
- Send Button: Up, Down, Left, Right, Option, PlayStation Button (PS), Enter, Back
More information about the ongoing games.
The module can be installed via the module Store.
The documentary can be found here: PlayStation 4 | Your Smart Home
- This module is still in the beta phase, I would be pleased about feedback or suggestions for improvement.
- It took a lot of nerves to get this module up to this level of functionality.
- Many thanks to Nall-Chan, who has given me food for thought and was hopefully not too annoyed with me.
quay
And from the README.md, roughly translated: IPS PS4
With this module it is possible to control a PS4 system via IP-Symcon. The module is still in a beta phase.
1. Functional scope
- Wake the PS4 from sleep mode
- Suspend PS4
- Launch PS4 games / apps
- Send...
PS4 Patch Builder for Building Modded Update PKGs by MODDED WARFARE
Since his YouTube Issues PlayStation 4 homebrew developer @MODDEDWARFARE returns releasing on Twitter a PS4 Patch Builder application used for building modded Update Packages (PKGs) alongside a video tutorial on his YouTube Channel! 
He states the new PlayStation 4 Patch Builder tool makes it both quicker and easier to create / build modded update PKG files for PS4 games than the previous update package methods.
Download: Patch_Builder_v1.3.3.zip (26.17 MB) / RAD Video Tools
For those interested, some previous PKG methods include Adding PS4 Game Updates in Packages, a PS4 PKG Repackager for FPKG Updates, another PS4 Fake PKG Update Repackager Script and handling PS4...
He states the new PlayStation 4 Patch Builder tool makes it both quicker and easier to create / build modded update PKG files for PS4 games than the previous update package methods.
Download: Patch_Builder_v1.3.3.zip (26.17 MB) / RAD Video Tools
For those interested, some previous PKG methods include Adding PS4 Game Updates in Packages, a PS4 PKG Repackager for FPKG Updates, another PS4 Fake PKG Update Repackager Script and handling PS4...
Mednafen PS4 PKG Port of Multi-system Emulator Arrives via Markus95
Following the Mednafen PS4 Emulator Demos earlier in the month, this weekend tester @Markus95 (aka @Kus00095) made available via Twitter a Mednafen PS4 PKG Port (mednafen.pkg) by @zezu420 (aka Znullptr on Twitter or dmiller423 on Github) who also has a Patreon Page and Github Sponsors Page set up for supporters to follow his work in progress. 🕹 
Download: Mednafen_PS4.rar (31.61 MB) / Mednafen PS4 2-Players Config Mod
For those curious, the multi-system emulator Mednafen covers the following computers and video game consoles with further notes below on the PlayStation 4 PKG Port:
As I announced last week, Znullptr recently shared Mednafen's .self, a multi-emulator that runs on a PC base and can emulate a lot of retro consoles, from the NES. to the PlayStation 1 through the Megadrive, etc...
After a little more than a week of work on emulators, here is a first official version available for everyone. Hang in there because there is a lot of information and explanations in this news...
Remember my 1st news, I told you unfortunately some problems here and there, so today worries with the FPKG are set, it works perfectly, no need for a homebrew annex to launch the .self, the...
Download: Mednafen_PS4.rar (31.61 MB) / Mednafen PS4 2-Players Config Mod
For those curious, the multi-system emulator Mednafen covers the following computers and video game consoles with further notes below on the PlayStation 4 PKG Port:
- Apple II/II+
- Atari Lynx
- Neo Geo Pocket (Color)
- WonderSwan
- GameBoy (Color)
- GameBoy Advance
- Nintendo Entertainment System
- Super Nintendo Entertainment System/Super Famicom
- Virtual Boy
- PC Engine/TurboGrafx 16 (CD)
- SuperGrafx
- PC-FX
- Sega Game Gear
- Sega Genesis/Megadrive
- Sega Master System
- Sega Saturn (experimental, x86_64 only)
- Sony PlayStation
As I announced last week, Znullptr recently shared Mednafen's .self, a multi-emulator that runs on a PC base and can emulate a lot of retro consoles, from the NES. to the PlayStation 1 through the Megadrive, etc...
After a little more than a week of work on emulators, here is a first official version available for everyone. Hang in there because there is a lot of information and explanations in this news...
Remember my 1st news, I told you unfortunately some problems here and there, so today worries with the FPKG are set, it works perfectly, no need for a homebrew annex to launch the .self, the...
RemotePlayPrototype: PS4 Remote Play Protocol Tool by Grill2010
Since his previous PSJoy Project for PC / Android devices and following the Chiaki free and open source PS4 Remote Play Client release from thestr4ng3r, PlayStation 4 homebrew developer @grill2010 recently updated his Github repository with RemotePlayPrototype... which is summarized as a 'quick and dirty tool to play around with the PS4 Remote Play protocol' for those who enjoy learning through tinkering. 
Download: RemotePlayPrototype-master.zip / GIT
And from the README.md: RemotePlayPrototype info
Quick and dirty prototype to play around with the protocol. This is just a research project there is no support. If there are some enthusiastic reverse engineers out there it would be great if they could contribute to the project.
It was not implemented only by my own, we are a group of developers who are interested in making the remote play protocol open source. The base of the project was taken from https://github.com/grill2010/ps4-remote-play but it seems that the initial creator has unfortunately abandoned the project. I'm not a professional reverse engineer so in case you have some suggestions feel free to let us know.
And again, this is prototype code, it is ugly, and it could contain bugs.
Current status
INFO: REGISTER IS CURRENTLY NOT WORKING DUE RECENT FIRMWARE 7.0 UPDATE
The prototype is able to register with the PS4, it can perform the initial TCP handshake with the console and it can receive audio and video stream data. The streaming protocol uses a GMAC crypto context for incoming data and for outgoing data.
Unlike many other streaming services Sony also likes to encrypt their audio and video frames so you can't just process them unfortunately but you have to decrypt the payload...
Download: RemotePlayPrototype-master.zip / GIT
And from the README.md: RemotePlayPrototype info
Quick and dirty prototype to play around with the protocol. This is just a research project there is no support. If there are some enthusiastic reverse engineers out there it would be great if they could contribute to the project.
It was not implemented only by my own, we are a group of developers who are interested in making the remote play protocol open source. The base of the project was taken from https://github.com/grill2010/ps4-remote-play but it seems that the initial creator has unfortunately abandoned the project. I'm not a professional reverse engineer so in case you have some suggestions feel free to let us know.
And again, this is prototype code, it is ugly, and it could contain bugs.
Current status
INFO: REGISTER IS CURRENTLY NOT WORKING DUE RECENT FIRMWARE 7.0 UPDATE
The prototype is able to register with the PS4, it can perform the initial TCP handshake with the console and it can receive audio and video stream data. The streaming protocol uses a GMAC crypto context for incoming data and for outgoing data.
Unlike many other streaming services Sony also likes to encrypt their audio and video frames so you can't just process them unfortunately but you have to decrypt the payload...