Raw Therapee is a free RAW converter and digital photo processing software.
It works with a lot of camera or raw systems :
* Adobe Digital Negative (DNG)
* Canon PowerShot G3, G5, G6, G7, G9, G10, G11, SD300, S30, S40, S45, S50, S60, S70, Pro1, S2 IS, S3 IS, S5 IS, A460, A470, A530, A570, A590, A610, A620, A630, A640, A650, A710 IS, A720 IS, SX1 IS, SX10
* Canon EOS D30, D60, 10D, 20D, 30D, 40D, 50D, 5D, 5D Mark II, 300D (Digital Rebel), 350D (Digital Rebel XT), 400D (Digital Rebel XTi), 450D (Digital Rebel XSi), 500D (Digital Rebel T1i), 1000D (Digital Rebel XS), 1D, 1Ds, 1D Mark II, 1D Mark III, 1D Mark II N, 1Ds Mark II, 1Ds Mark III
* Casio QV-2000UX, QV-3000EX, QV-3500EX, QV-4000, QV-5700, QV-R51, QV-R61, EX-S100, EX-Z4, EX-Z50, EX-Z55, Exilim Pro 505/600/700
* Kodak DC20, DC25, DC40, DC50, DC120, DCS315C, DCS330C, DCS420, DCS460, DCS460A, DCS520C, DCS560C, DCS620C, DCS620X, DCS660C, DCS660M, DCS720X, DCS760C, DCS760M, EOSDCS1, EOSDCS3B, NC2000F, PB645C, PB645H, PB645M, DCS Pro 14n, DCS Pro 14nx, DCS Pro SLR/c, DCS Pro SLR/n, P850, P880
* Minolta RD175, DiMAGE 5, 7, 7i, 7Hi, A1, A2, A200, G400, G500, G530, G600, Z2, Dynax/Maxxum 5D, Dynax/Maxxum 7D
* Nikon D1, D1H, D1X, D2H, D2Hs, D2X, D2Xs, D3, D3X, D40, D40X, D50, D60, D70, D70s, D80, D90, D100, D200, D300, D700, D3000, D5000, E2100, E3700, E5400, E8400, E8700, E8800, Coolpix P6000
* Olympus C3030Z, C5050Z, C5060WZ, C7070WZ, C70Z, C7000Z, C740UZ, C770UZ, C8080WZ, E-1, E-3, E-10, E-20, E-300, E-330, E-400, E-410, E-420, E-500, E-510, E-520, E-620, E-P1, SP310, SP320, SP350, SP500UZ, SP510UZ, SP550UZ, SP560UZ, SP570UZ
* Panasonic DMC FZ8, FZ18, FZ28, FZ30, FZ50, FX150, L1, LC1, LX1, LX2, LX3, L10, L1, G1, GH1, GF1
* Pentax *ist D, DL, DL2, DS, DS2, K100D, K100D Super, K200D, K10D, K20D, K2000/K-m, K7
* Sony DSC-R1, DSC-V3, DSLR-A100, A200, A300, A350, A700, A900
* Samsung GX-1S, GX-10
* Fuji FinePix E550, E900, F700, F710, F800, F810, S2Pro, S3Pro, S5Pro, S20Pro, S5000, S5100/S5500, S5200/S5600, S6000fd, S6500fd, S7000, S9000/S9500, S9100/S9600, IS-1
* Some Sinar, Phase One, Leaf, AVT, Leica, Hasselblad, Imacon, Mamiya cameras

Main features :
* Selectable high performance demosaicing algorithms (EAHD and HPHD and VNG-4).
Compare them on this comparison page.
* Using DCRaw 8.82/1.398 for decoding RAW images
* Image post processing in 16 bit / channel mode
o Exposure control in RGB space
+ Auto exposure with adjustable clipping point / Exposure compensation / Shadow and highight compression / Contrast adjustment, curve editor
o White balance adjustment in RGB space
+ With in-camera, automatic and spot white balance options / Temperature/Green tint fine tuning
o Highlight Recovery
o Shadows/Highlights control in RGB space
o Basic Luminance curve tool to modify the luminance channel in CIELab color space
+ Brightness / Contrast adjustment, curve editor
o USM sharpening applied on the CIELab luminance channel
+ Classical USM parameters (Radius, Amount, Threshold) / Option to avoid noise amplification / Sharpening halo control
o Optional RL Deconvolution based sharpening for even better sharpening results
o Color shift control in CIELab color space
+ Allows color shift by shifting the CIELab "a" and "b" channels
o Color booster applied on the CIELab "a" and "b" channels
+ Amplifies color channels "a" and "b" together or separately / Avoids color overamplification in high chrominance areas / Option to avoid clipping caused by too high color boosting
o Luminance denoising algorithm applied on the CIELab luminance channel
+ Edge sensitive method to preserve as much details as possible
o Color denoising tool applied on the CIELab "a" and "b" channels
+ Classical gaussian blur or edge sensitive bluring of the color channels
o Fast switching between different postprocessing profiles
o Image flipping horizontally or vertically, rotation by 90 degrees clockwise or counter clockwise
o Arbitrary image rotation (straightening tool)
+ with fill function or automatic crop
o Simple lens distortion correction
o Crop tool
o Chromatic Aberration correction tool
o Channel Mixer for Red, Green and Blue channels
o C/A Correction
o Vignetting Correction
* ICC based color management
* Change History with bookmarks to support before/after checking
* Output options:
o Supported file formats:
+ JPEG (8 bit), PNG (8 or 16 bit), TIFF (8 or 16 bit)
o Image ouput size could be set
o EXIF data is preserved in JPEG output (except crw files)
o Output directory and automatic file naming highly customizable
* File browsing with thumbnails
* Localization supported (utf8 language file)

languages : chinese simplified and traditional, czech, dansk, deutsch, english-uk and US, eskara, espanol, français, greek, hebrew, italian, japanese, latvian, magyar, nederlands, nork_bm, polish, russian, slovak,suomi, swedish, turkish

platforms : win32 (Windows 32 bit), Linux or Mac
Windows versions : Windows 2000, XP or Vista, Seven

Portability :
How can I make RawTherapee portable?
As RawTherapee does not write anything into the registry (Windows) this is a simple task. Simply
edit the file options within the RT applications directory and change the value MultiUser=true
to MultiUser=false. With that no .RAWTherapee folder is created within the users HOME directory.
With MultiUser=true for each user a .RawTherapee folder will be created within his
HOME directory the first time RT is run.

My own opinion :
These apps offers very good treatments for photography's optimization, particulary demosaicing algorithms.
I used it with my Nikon's camera, but also with other jpg or tiff images (scans) .


homepage : http://www.rawtherapee.com
virus scan :0/43

JP4U

I've tryed the latest beta 3.0 for Win 32 and Win64 versions.
They are very stable.
Some new features :
Before/after view .
Some new demosaicing method (now : AMaZE, DCB, fast, AHD, EAHD, HPHD & VNG4)
Multiple denoising methods: luminance, chrominance, impulse (for salt and pepper noise) noise reduction

JP4U

Raw Therapee 4.0 est sorti avec pas mal de nouveautés :

Quoi de neuf dans RawTherapee 4 (depuis 3.0)
● Calculs en virgule flottante
● Explorateur de fichiers amélioré : Utilisation de la couleur pour le repérage, la
recherche, le filtrage, etc.
● Nouveaux outils de traitement des images : Compensation du niveau du noir,
gamma en sortie, netteté de texture et de bordure, réduction des artefact et bruit post
dématriçage, correction automatique de la distorsion, etc.
● Meilleure récupération des hautes lumières : Une nouvelle méthode de « fondu », une méthode de « propagation de la couleur » redéfinie, et plus de bande passante grâce aux opérations en virgule flottante
● Interface utilisateur flexible : Vous pouvez cacher des panneaux, désactiver et
déplacer des sections pour les adapter à vos besoins et à la taille de votre écran.
● Fenêtre d'édition améliorée : Indicateurs d'exposition hors domaine plus précis et
en nuances de gris, davantage de vérifications des couleurs, l'histogramme raw
existe en modes linéaire et logarithmique, les courbes s'ouvrent automatiquement,
etc
● Meilleure gestion de la couleur : Nouveau système de gestion des couleurs et
manipulation plus précise, auto-détection du profil du moniteur (Windows)
● Davantage de raccourcis clavier : Pour travailler plus vite
● Davantage d'options en ligne de commande : Permet d'automatiser RT par
utilisation des scripts ou de l'appeler depuis d'autres programmes.
● Son : Vous informe lorsque par exemple le traitement par lot est terminé.
● XMP: inchangés : Conserve toutes les métadonnées présentes dans vos fichiers raw
(par ex DNG)
● Amélioration de la stabilité : Résolution de bogues et perfectionnements structuraux
par rapport à la version 3.0, surtout pour Windows.

La version 4 est proposée en .msi (windows Installer). À priori on peut l'extraire avec Universal Extractor, par contre il faudra vérifier si la portabilité est conservable facilement comme pour la version 3.



Raw therapee 4.0 now exists with a lot of news :

What’s new in RawTherapee 4.0 (since 3.0)
● Floating point engine
● Much enhanced file browser - Colored tagging, searching, filtering...
● New image tools - Like black level compensation, output gamma, microcontrast, post demosaic arti-
fact/noise reduction...
● Better highlight recovery - More (Blend) and redesigned (Color propagation) options, and more head-
room with floating point
● Flexible UI - you can hide panes, disable and move sections to adapt it to your need and screen size
● Improved edit window - grayscaled and precise clipping indicators, more color probings, RAW histogram
with linear/log mode, F5 opens processed file in default editor, curves auto-open...
● Better color management - New color management system and more precise handling, monitor profile
auto-detection
● More keyboard shortcuts - To work faster
● More command line options - Allow you to automize RT using scripts or calling from other programs
● Sound - Informs you when e.g. the batch queue is done
● XMP copy-unchanged - Keep all the metadata in your pretagged RAWs (e.g. DNGs)
● Stability improvements - Bugfixes and structural enhancements that did not make it in 3.0, espc. for
Windows

Version 4.0 is proposed in .msi format (Windows'installer) Its seems possible extract it with Universal Extractor, but it's necessary verify if the portability can be the same like the version 3 .

JP4U

+1!

Very powerful software!

+1
Nice alternative to Adobe lightroom and bridge!