\documentclass{article}

\usepackage{esint}

\begin{document}

\[
\textstyle \int \quad \displaystyle \int
\]

\[
\textstyle \iint \quad \displaystyle \iint
\]

\[
\textstyle \iiint \quad \displaystyle \iiint
\]

\[
\textstyle \iiiint \quad \displaystyle \iiiint
\]

\[
\textstyle \dotsint \quad \displaystyle \dotsint
\]

\[
\textstyle \oint \quad \displaystyle \oint
\]

\[
\textstyle \oiint \quad \displaystyle \oiint
\]

\[
\textstyle \varoiint \quad \displaystyle \oiint
\]

\[
\textstyle \sqint \quad \displaystyle \sqint
\]

\[
\textstyle \sqiint \quad \displaystyle \sqiint
\]

\[
\textstyle \ointctrclockwise \quad \displaystyle \ointctrclockwise
\]

\[
\textstyle \ointclockwise \quad \displaystyle \ointclockwise
\]

\[
\textstyle \varointclockwise \quad \displaystyle \varointclockwise
\]

\[
\textstyle \varointctrclockwise \quad \displaystyle \varointctrclockwise
\]

\[
\textstyle \fint \quad \displaystyle \fint
\]

\[
\textstyle \landupint \quad \displaystyle \landupint
\]

\[
\textstyle \landdownint \quad \displaystyle \landdownint
\]

\[
\textstyle \iiiint_C F(x)dx \quad \displaystyle \iiiint_C F(x)dx
\]

\[
\textstyle \dotsint_C F(x)dx \quad \displaystyle \dotsint_C F(x)dx
\]
\[
\textstyle \landupint_C F(x)dx \quad \displaystyle \landupint_C F(x)dx
\]

\end{document}
