Projects
Consentry
SheetLS-01Open project: ConsentryChecks websites for consent banners, tracking and cookies.
Consentry loads a page in a real browser in five consent states and shows which requests and cookies are set, and when. The result is an evidence-backed report. One report per day is free, with or without an account; with daily checks Consentry compares the reports.
DisplayBridge
SheetLS-02Open project: DisplayBridgeTransfers files as a QR code sequence, with no network at all.
A sender shows the file as a fast sequence of QR codes, a receiver reads it back with a webcam. Meant for machines without a network connection, or when USB, Wi-Fi and Bluetooth are not available. The transfer is verified with SHA-256.
Seifenrechner
SheetLS-03Open project: SeifenrechnerCalculates lye and recipe for homemade soap.
Pick oils, set superfatting and liquid, and the calculator gives the amount of NaOH for bar soap or KOH for liquid soap, plus the fatty acid profile. It runs in the browser without a login and explains the calculation and the safety notes. The site is in German.
ChartsCheck
SheetLS-04Open project: ChartsCheckReal-time technical chart analysis with buy and sell signals.
ChartsCheck draws charts for crypto currencies, stocks and commodities and overlays indicators such as RSI, Stochastic RSI, moving averages, Bollinger Bands, Fibonacci and Supertrend. The site is free to use.
Wohnungswertrechner
SheetLS-05Open project: WohnungswertrechnerEstimates the market value of houses and apartments in Germany.
The calculator uses the Rufwert method, a cost-based approach with multiplicative market adjustment factors such as location, condition and equipment. It is free and needs no registration. The site is in German.
QR-Code Generator
SheetLS-06Open project: QR-Code GeneratorCreates QR codes from a form or through an interface.
The service is free and licence-free. QR codes are created either from a form or through an interface that lets you embed a QR code directly in another website. The site is in German.
EAN Barcode Generator
SheetLS-07Open project: EAN Barcode GeneratorCreates EAN-8 and EAN-13 barcodes as images.
From an 8 or 13 digit European Article Number the barcode is generated to GTIN-8 or GTIN-13 as a JPG, GIF or PNG image. The web service is free and can be called from other websites. The site is in German.
RegEx Editor
SheetLS-08Open project: RegEx EditorBuild and test regular expressions.
The editor is built around the PHP regular expression functions but is useful for other languages too. An expression can be tested in the form or checked through an interface from another website. The site is in German.
Behördenkennzahlen
SheetLS-09Open project: BehördenkennzahlenDirectory of German authority codes (Behördenkennzahlen).
To look up an authority code and the place it belongs to, several lists are available, sorted by code and by city name. The site is in German.
Turnus
SheetLS-10Open project: TurnusPuts your shift schedule into your calendar.
Turnus enters shifts into a calendar of your choice, with a month view, recurring patterns and hours calculation. On request the schedule is shared with family and friends. The app works fully without an account. The site is in German.
Wildpick
SheetLS-11Open project: WildpickRemembers where something can be foraged and when it is ripe.
Wildpick marks finds in public space on a map, keeps photos and details, and shows in a calendar when the next harvest is due, even without a network in the forest. An account is optional and only needed in the app. The site is in German.
OffersCheck
SheetLS-12Open project: OffersCheckIndependent price comparison for weekly offers from well-known retailers.
OffersCheck collects current offers from retailers such as Lidl, Aldi Nord and Norma with price, discount and validity, and keeps the price history. Price alerts and use are free. There are editions for Germany, Switzerland, France, Spain, Ireland and Great Britain.
Marktreif
SheetLS-13Open project: MarktreifSupermarket offers with the lowest recorded promotional price.
Marktreif compares a promotional price with every earlier recorded promotional price of the same product at the same retailer. The site does not know the shelf price, and says so. The site is in German.
Angebote und Deals
SheetLS-14Open project: Angebote und DealsA listing of the best offers and discounts in Germany.
A clear list of current hot deals with product picture, price and discount, searchable by product. The site is in German.
FasterBay
SheetLS-15Open project: FasterBayCompare offers and prices on eBay faster.
FasterBay puts eBay offers for a product side by side so prices can be compared more quickly, for example for 3D printers. The site is in German.
Threedoo
SheetLS-16Open project: ThreedooPortal for printable 3D files (STL).
Threedoo is a gallery where 3D printer files can be found and downloaded for free. Anyone who designs models can upload them and earn money through the download model.
3D-Drucker Testsieger
SheetLS-17Open project: 3D-Drucker TestsiegerTest reports and price comparison for 3D printers.
The site compares 3D printers technically and covers frame stability, features, print speed and accessories such as permanent print plates. Technical data comes from manufacturer specifications and from own analysis. The site is in German.
Deine Umzugshelfer
SheetLS-18Open project: Deine UmzugshelferMoving and clearance services around Konstanz and Lake Constance.
Student helpers take on moves, clearances, furniture assembly and wrapping, within Konstanz and between cities. The site is in German.
Studentenhelfer
SheetLS-19Open project: StudentenhelferStudent moving service in Konstanz, Radolfzell, Singen and more.
Moving and clearance service by students in Konstanz, Radolfzell, Singen, Friedrichshafen and Karlsruhe. The site is in German.
Software archive
Older Windows programs and a phone app, still available for download. Descriptions are in German.
| Program | Category | Description |
|---|---|---|
| SlimXP | Application / optimisation | SlimXP is an application for Windows 2000/XP that quickly removes unwanted data and so speeds up the computer. (Awarded several times by PC Praxis.) |
| XP Tuning Indicator | Application / optimisation | XP Tuning Indicator is an application for Windows 2000/XP that adapts your PC to your needs. The program offers 200 settings to optimise and customise the PC. |
| VisualPNG | Tool / optimisation | VisualPNG is a graphical program that reduces the file size of PNG files without loss. |
| ServicePack Integration | Tool / utility | This program merges Windows XP service packs into your Windows XP CD. The result is a new Windows XP CD with the current service pack. |
| Stopwatch | Mobile Java app | Stopwatch is a stopwatch application for Java-enabled phones. |
Articles
Guides and programming articles, among them using Xiaomi devices in English or German. Most articles are in German.