| Software | Pros | Cons | Best for | | :--- | :--- | :--- | :--- | | | Supports many file formats, portable, many voices | Cluttered UI, slower launch | Document readers | | T2S (Text to Speech) | Android & PC sync, cloud voices | Requires internet on first use | Mobile users | | eSpeak NG | Extremely light, command-line focused | No GUI, robotic Linux-style voices | Developers, batch scripts | | Microsoft Edge "Read Aloud" | Natural neural voices (Jenny, Aria) | Requires Edge open, no shortcuts | Casual web reading |

Open XPSPEAK, go to , or use Data > Import (ASCII) if you are importing raw text data.

: Supports standard models such as Shirley , Linear , and Tougaard .

The "XPSEAK download" is a rite of passage for many spectroscopists. It is the software equivalent of an old, reliable hammer. It isn't smart, it isn't pretty, and you have to find it in the back of a dusty drawer (or a forgotten server), but when you hit a nail, it works perfectly.

Microsoft Edge is the simplest solution. In Windows 10 or 11, right-click an XPS file > Open with > Microsoft Edge. Then press Ctrl+Shift+U to activate the Read Aloud feature. This often outperforms legacy XPSpeak.

is a popular freeware program designed for peak fitting and processing of X-ray Photoelectron Spectroscopy (XPS) spectra. Originally developed by Raymund Kwok, it remains a heavily cited tool in materials science, chemistry, and surface physics for deconstructing complex spectral data.

Supporting methods such as Shirley or Tougaard background subtractions.

The software uses a least-squares fitting routine to minimize the Chi-squared ( χ2chi squared

Manually or automatically add peaks to fit the raw data.

ResearchGate discussions frequently provide links to XPSPEAK download files provided by users.

Adjust the high and low binding energy boundaries to find a flat, stable region on both sides of your spectral envelope. 3. Adding and Constraining Peaks

Choose your background type. is the most common choice for high-resolution core-level spectra (like C 1s, O 1s, or N 1s).

Obtain the compressed file (typically xpspeak41.zip ) from a trusted source.

In your instrument's native software, export the high-resolution regional scans (e.g., C 1s, O 1s, Fe 2p) as a 2-column text file containing Binding Energy (eV) and Intensity (Counts/CPS) .

Sites like Informer Technologies track various versions, though users should exercise caution with third-party installers.